Macaron 1.5 (#12596)
* update macaron to v1.5 of fork * update macaron to v1.5 of fork * test gzip PR * add push method impl to context_tests * use proper gzip commit Co-authored-by: zeripath <art27@cantab.net> Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>release/v1.15
techknowlogick
GitHub
parent
211321fb93
commit
c5d5d63c9c
10
go.mod
10
go.mod
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@ -11,10 +11,10 @@ require (
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gitea.com/macaron/captcha v0.0.0-20190822015246-daa973478bae
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gitea.com/macaron/cors v0.0.0-20190826180238-95aec09ea8b4
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gitea.com/macaron/csrf v0.0.0-20190822024205-3dc5a4474439
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gitea.com/macaron/gzip v0.0.0-20191118041502-506895b47aae
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gitea.com/macaron/gzip v0.0.0-20200827120000-efa5e8477cf5
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gitea.com/macaron/i18n v0.0.0-20190822004228-474e714e2223
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gitea.com/macaron/inject v0.0.0-20190805023432-d4c86e31027a
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gitea.com/macaron/macaron v1.4.0
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gitea.com/macaron/macaron v1.5.0
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gitea.com/macaron/session v0.0.0-20191207215012-613cebf0674d
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gitea.com/macaron/toolbox v0.0.0-20190822013122-05ff0fc766b7
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github.com/BurntSushi/toml v0.3.1
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@ -61,7 +61,7 @@ require (
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github.com/jmhodges/levigo v1.0.0 // indirect
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github.com/kballard/go-shellquote v0.0.0-20170619183022-cd60e84ee657
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github.com/keybase/go-crypto v0.0.0-20200123153347-de78d2cb44f4
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github.com/klauspost/compress v1.10.2
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github.com/klauspost/compress v1.10.11
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github.com/lafriks/xormstore v1.3.2
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github.com/lib/pq v1.7.0
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github.com/lunny/dingtalk_webhook v0.0.0-20171025031554-e3534c89ef96
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@ -104,7 +104,7 @@ require (
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github.com/yuin/goldmark v1.2.1
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github.com/yuin/goldmark-highlighting v0.0.0-20200307114337-60d527fdb691
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github.com/yuin/goldmark-meta v0.0.0-20191126180153-f0638e958b60
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golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de
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golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
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golang.org/x/net v0.0.0-20200707034311-ab3426394381
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golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d
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golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae
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@ -115,7 +115,7 @@ require (
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gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect
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gopkg.in/asn1-ber.v1 v1.0.0-20150924051756-4e86f4367175 // indirect
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gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
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gopkg.in/ini.v1 v1.57.0
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gopkg.in/ini.v1 v1.60.2
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gopkg.in/ldap.v3 v3.0.2
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gopkg.in/yaml.v2 v2.3.0
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mvdan.cc/xurls/v2 v2.1.0
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20
go.sum
20
go.sum
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@ -23,8 +23,8 @@ gitea.com/macaron/cors v0.0.0-20190826180238-95aec09ea8b4 h1:e2rAFDejB0qN8OrY4xP
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gitea.com/macaron/cors v0.0.0-20190826180238-95aec09ea8b4/go.mod h1:rtOK4J20kpMD9XcNsnO5YA843YSTe/MUMbDj/TJ/Q7A=
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gitea.com/macaron/csrf v0.0.0-20190822024205-3dc5a4474439 h1:88c34YM29a1GlWLrLBaG/GTT2htDdJz1u3n9+lmPolg=
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gitea.com/macaron/csrf v0.0.0-20190822024205-3dc5a4474439/go.mod h1:IsQPHx73HnnqFBYiVHjg87q4XBZyGXXu77xANukvZuk=
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gitea.com/macaron/gzip v0.0.0-20191118041502-506895b47aae h1:OXxYwGmGNfYrC0/sUUL9KSvr2Sfvmzwgd2YD65vIjGE=
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gitea.com/macaron/gzip v0.0.0-20191118041502-506895b47aae/go.mod h1:jGHtoovArcQj+sw7NJxyPgjuRxOSG9a/oFu3VkLRTKQ=
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gitea.com/macaron/gzip v0.0.0-20200827120000-efa5e8477cf5 h1:6rbhThlqfOb+sSmhrsVFz3bZoAeoloe7TZqyeiPbbWI=
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gitea.com/macaron/gzip v0.0.0-20200827120000-efa5e8477cf5/go.mod h1:z8vCjuhqDfvzPUJDowGqbsgoeYBvDbl95S5k6y43Pxo=
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gitea.com/macaron/i18n v0.0.0-20190822004228-474e714e2223 h1:iZWwQif/LHMjBgfY/ua8CFVa4XMDfbbs7EZ0Q1dYguU=
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gitea.com/macaron/i18n v0.0.0-20190822004228-474e714e2223/go.mod h1:+qsc10s4hBsHKU/9luGGumFh4m5FFVc7uih+8/mM1NY=
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gitea.com/macaron/inject v0.0.0-20190803172902-8375ba841591/go.mod h1:h6E4kLao1Yko6DOU6QDnQPcuoNzvbZqzj2mtPcEn1aM=
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@ -33,8 +33,8 @@ gitea.com/macaron/inject v0.0.0-20190805023432-d4c86e31027a/go.mod h1:h6E4kLao1Y
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gitea.com/macaron/macaron v1.3.3-0.20190803174002-53e005ff4827/go.mod h1:/rvxMjIkOq4BM8uPUb+VHuU02ZfAO6R4+wD//tiCiRw=
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gitea.com/macaron/macaron v1.3.3-0.20190821202302-9646c0587edb h1:amL0md6orTj1tXY16ANzVU9FmzQB+W7aJwp8pVDbrmA=
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gitea.com/macaron/macaron v1.3.3-0.20190821202302-9646c0587edb/go.mod h1:0coI+mSPSwbsyAbOuFllVS38awuk9mevhLD52l50Gjs=
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gitea.com/macaron/macaron v1.4.0 h1:FY1QDGqyuUzs21K6ChkbYbRUfwL7v2aUrhNEJ0IgsAw=
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gitea.com/macaron/macaron v1.4.0/go.mod h1:P7hfDbQjcW22lkYkXlxdRIfWOXxH2+K4EogN4Q0UlLY=
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gitea.com/macaron/macaron v1.5.0 h1:TvWEcHw1/zaHlo0GTuKEukLh3A99+QsU2mjBrXLXjVQ=
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gitea.com/macaron/macaron v1.5.0/go.mod h1:P7hfDbQjcW22lkYkXlxdRIfWOXxH2+K4EogN4Q0UlLY=
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gitea.com/macaron/session v0.0.0-20190821211443-122c47c5f705 h1:mvkQGAlON1Z6Y8pqa/+FpYIskk54mazuECUfZK5oTg0=
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gitea.com/macaron/session v0.0.0-20190821211443-122c47c5f705/go.mod h1:1ujH0jD6Ca4iK9NL0Q2a7fG2chvXx5hVa7hBfABwpkA=
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gitea.com/macaron/session v0.0.0-20191207215012-613cebf0674d h1:XLww3CvnFZkXVwauN67fniDaIpIqsE+9KVcxlZKlvLU=
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@ -489,8 +489,8 @@ github.com/kisielk/errcheck v1.1.0/go.mod h1:EZBBE59ingxPouuu3KfxchcWSUPOHkagtvW
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github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
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github.com/klauspost/compress v1.4.1/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
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github.com/klauspost/compress v1.9.2/go.mod h1:RyIbtBH6LamlWaDj8nUwkbUhJ87Yi3uG0guNDohfE1A=
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github.com/klauspost/compress v1.10.2 h1:Znfn6hXZAHaLPNnlqUYRrBSReFHYybslgv4PTiyz6P0=
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github.com/klauspost/compress v1.10.2/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
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github.com/klauspost/compress v1.10.11 h1:K9z59aO18Aywg2b/WSgBaUX99mHy2BES18Cr5lBKZHk=
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github.com/klauspost/compress v1.10.11/go.mod h1:aoV0uJVorq1K+umq18yTdKaF57EivdYsUV+/s2qKfXs=
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github.com/klauspost/cpuid v1.2.0/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
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github.com/klauspost/cpuid v1.2.3 h1:CCtW0xUnWGVINKvE/WWOYKdsPV6mawAtvQuSl8guwQs=
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github.com/klauspost/cpuid v1.2.3/go.mod h1:Pj4uuM528wm8OyEC2QMXAi2YiTZ96dNQPGgoMS4s3ek=
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@ -819,8 +819,8 @@ golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPh
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golang.org/x/crypto v0.0.0-20200323165209-0ec3e9974c59/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de h1:ikNHVSjEfnvz6sxdSPCaPt572qowuyMDMJLLm3Db3ig=
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golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
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golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
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golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
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golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
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golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
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@ -1014,6 +1014,10 @@ gopkg.in/ini.v1 v1.44.2/go.mod h1:M3Cogqpuv0QCi3ExAY5V4uOt4qb/R3xZubo9m8lK5wg=
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gopkg.in/ini.v1 v1.46.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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gopkg.in/ini.v1 v1.57.0 h1:9unxIsFcTt4I55uWluz+UmL95q4kdJ0buvQ1ZIqVQww=
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gopkg.in/ini.v1 v1.57.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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gopkg.in/ini.v1 v1.60.1 h1:P5y5shSkb0CFe44qEeMBgn8JLow09MP17jlJHanke5g=
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gopkg.in/ini.v1 v1.60.1/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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gopkg.in/ini.v1 v1.60.2 h1:7i8mqModL63zqi8nQn8Q3+0zvSCZy1AxhBgthKfi4WU=
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gopkg.in/ini.v1 v1.60.2/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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gopkg.in/ldap.v3 v3.0.2 h1:R6RBtabK6e1GO0eQKtkyOFbAHO73QesLzI2w2DZ6b9w=
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gopkg.in/ldap.v3 v3.0.2/go.mod h1:oxD7NyBuxchC+SgJDE1Q5Od05eGt29SDQVBmV+HYbzw=
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gopkg.in/resty.v1 v1.12.0/go.mod h1:mDo4pnntr5jdWRML875a/NmxYqAlA73dVijT2AXvQQo=
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@ -117,6 +117,10 @@ func (rw *mockResponseWriter) Before(b macaron.BeforeFunc) {
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b(rw)
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}
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func (rw *mockResponseWriter) Push(target string, opts *http.PushOptions) error {
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return nil
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}
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type mockRender struct {
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http.ResponseWriter
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}
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@ -1,9 +1,9 @@
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kind: pipeline
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name: go1-1-2
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name: go1-14
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steps:
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- name: test
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image: golang:1.12
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image: golang:1.14
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environment:
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GOPROXY: https://goproxy.cn
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commands:
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@ -12,11 +12,11 @@ steps:
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---
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kind: pipeline
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name: go1-1-3
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name: go1-15
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steps:
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- name: test
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image: golang:1.13
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image: golang:1.15
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environment:
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GOPROXY: https://goproxy.cn
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commands:
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@ -3,7 +3,9 @@ module gitea.com/macaron/gzip
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go 1.12
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require (
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gitea.com/macaron/macaron v1.3.3-0.20190821202302-9646c0587edb
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gitea.com/macaron/macaron v1.5.0
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github.com/klauspost/compress v1.9.2
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github.com/stretchr/testify v1.4.0
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golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a // indirect
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gopkg.in/ini.v1 v1.60.1 // indirect
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)
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@ -1,7 +1,7 @@
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gitea.com/macaron/inject v0.0.0-20190803172902-8375ba841591 h1:UbCTjPcLrNxR9LzKDjQBMT2zoxZuEnca1pZCpgeMuhQ=
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gitea.com/macaron/inject v0.0.0-20190803172902-8375ba841591/go.mod h1:h6E4kLao1Yko6DOU6QDnQPcuoNzvbZqzj2mtPcEn1aM=
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gitea.com/macaron/macaron v1.3.3-0.20190821202302-9646c0587edb h1:amL0md6orTj1tXY16ANzVU9FmzQB+W7aJwp8pVDbrmA=
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gitea.com/macaron/macaron v1.3.3-0.20190821202302-9646c0587edb/go.mod h1:0coI+mSPSwbsyAbOuFllVS38awuk9mevhLD52l50Gjs=
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gitea.com/macaron/inject v0.0.0-20190805023432-d4c86e31027a h1:aOKEXkDTnh4euoH0so/THLXeHtQuqHmDPb1xEk6Ehok=
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gitea.com/macaron/inject v0.0.0-20190805023432-d4c86e31027a/go.mod h1:h6E4kLao1Yko6DOU6QDnQPcuoNzvbZqzj2mtPcEn1aM=
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gitea.com/macaron/macaron v1.5.0 h1:TvWEcHw1/zaHlo0GTuKEukLh3A99+QsU2mjBrXLXjVQ=
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gitea.com/macaron/macaron v1.5.0/go.mod h1:P7hfDbQjcW22lkYkXlxdRIfWOXxH2+K4EogN4Q0UlLY=
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github.com/davecgh/go-spew v1.1.0 h1:ZDRjVQ15GmhC3fiQ8ni8+OwkZQO4DARzQgrnXU1Liz8=
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github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/gopherjs/gopherjs v0.0.0-20181017120253-0766667cb4d1/go.mod h1:wJfORRmW1u3UXTncJ5qlYoELFm8eSnnEO6hX4iZ3EWY=
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@ -17,17 +17,21 @@ github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZN
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github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
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github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304 h1:Jpy1PXuP99tXNrhbq2BaPz9B+jNAvH1JPQQpG/9GCXY=
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github.com/smartystreets/assertions v0.0.0-20190116191733-b6c0e53d7304/go.mod h1:OnSkiWE9lh6wB0YB77sQom3nweQdgAjqCqsofrRNTgc=
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github.com/smartystreets/assertions v1.0.1 h1:voD4ITNjPL5jjBfgR/r8fPIIBrliWrWHeiJApdr3r4w=
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github.com/smartystreets/assertions v1.0.1/go.mod h1:kHHU4qYBaI3q23Pp3VPrmWhuIUrLW/7eUrw0BU5VaoM=
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github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c/go.mod h1:XDJAKZRPZ1CvBcN2aX5YOUTYGHki24fSF0Iv48Ibg0s=
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github.com/smartystreets/goconvey v0.0.0-20190731233626-505e41936337 h1:WN9BUFbdyOsSH/XohnWpXOlq9NBD5sGAB2FciQMUEe8=
|
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github.com/smartystreets/goconvey v0.0.0-20190731233626-505e41936337/go.mod h1:syvi0/a8iFYH4r/RixwvyeAJjdLS9QV7WQ/tjFTllLA=
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github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
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github.com/stretchr/testify v1.4.0 h1:2E4SXV/wtOkTonXsotYi4li6zVWxYlZuYNCXe9XRJyk=
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github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
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github.com/unknwon/com v0.0.0-20190804042917-757f69c95f3e h1:GSGeB9EAKY2spCABz6xOX5DbxZEXolK+nBSvmsQwRjM=
|
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github.com/unknwon/com v0.0.0-20190804042917-757f69c95f3e/go.mod h1:tOOxU81rwgoCLoOVVPHb6T/wt8HZygqH5id+GNnlCXM=
|
||||
github.com/unknwon/com v1.0.1 h1:3d1LTxD+Lnf3soQiD4Cp/0BRB+Rsa/+RTvz8GMMzIXs=
|
||||
github.com/unknwon/com v1.0.1/go.mod h1:tOOxU81rwgoCLoOVVPHb6T/wt8HZygqH5id+GNnlCXM=
|
||||
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4 h1:HuIa8hRrWRSrqYzx1qI49NNxhdi2PrY7gxVSq1JjLDc=
|
||||
golang.org/x/crypto v0.0.0-20190701094942-4def268fd1a4/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
|
||||
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
|
||||
golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||
golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||
|
|
@ -38,5 +42,7 @@ gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+
|
|||
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||
gopkg.in/ini.v1 v1.44.0 h1:YRJzTUp0kSYWUVFF5XAbDFfyiqwsl0Vb9R8TVP5eRi0=
|
||||
gopkg.in/ini.v1 v1.44.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
|
||||
gopkg.in/ini.v1 v1.60.1 h1:P5y5shSkb0CFe44qEeMBgn8JLow09MP17jlJHanke5g=
|
||||
gopkg.in/ini.v1 v1.60.1/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
|
||||
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
|
||||
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ package gzip
|
|||
|
||||
import (
|
||||
"bufio"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
"net"
|
||||
|
|
@ -331,6 +332,15 @@ func (proxy *ProxyResponseWriter) Flush() {
|
|||
proxy.internal.Flush()
|
||||
}
|
||||
|
||||
// Push implements http.Pusher for HTTP/2 Push purposes
|
||||
func (proxy *ProxyResponseWriter) Push(target string, opts *http.PushOptions) error {
|
||||
pusher, ok := proxy.internal.(http.Pusher)
|
||||
if !ok {
|
||||
return errors.New("the ResponseWriter doesn't support the Pusher interface")
|
||||
}
|
||||
return pusher.Push(target, opts)
|
||||
}
|
||||
|
||||
// Hijack implements http.Hijacker. If the underlying ResponseWriter is a
|
||||
// Hijacker, its Hijack method is returned. Otherwise an error is returned.
|
||||
func (proxy *ProxyResponseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
|
||||
|
|
|
|||
|
|
@ -3,7 +3,9 @@ name: default
|
|||
|
||||
steps:
|
||||
- name: test
|
||||
image: golang:1.12
|
||||
image: golang:1.13
|
||||
environment:
|
||||
GOPROXY: https://goproxy.cn
|
||||
commands:
|
||||
- go get -u
|
||||
- go build -v
|
||||
|
|
|
|||
|
|
@ -1,5 +1,9 @@
|
|||
Macaron [](https://travis-ci.org/go-macaron/macaron)
|
||||
=======================
|
||||
# Macaron
|
||||
|
||||
[](https://github.com/go-macaron/macaron/actions?query=workflow%3AGo)
|
||||
[](https://codecov.io/gh/go-macaron/macaron)
|
||||
[](https://pkg.go.dev/gopkg.in/macaron.v1?tab=doc)
|
||||
[](https://sourcegraph.com/github.com/go-macaron/macaron)
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -193,9 +193,9 @@ func (ctx *Context) parseForm() {
|
|||
contentType := ctx.Req.Header.Get(_CONTENT_TYPE)
|
||||
if (ctx.Req.Method == "POST" || ctx.Req.Method == "PUT") &&
|
||||
len(contentType) > 0 && strings.Contains(contentType, "multipart/form-data") {
|
||||
ctx.Req.ParseMultipartForm(MaxMemory)
|
||||
_ = ctx.Req.ParseMultipartForm(MaxMemory)
|
||||
} else {
|
||||
ctx.Req.ParseForm()
|
||||
_ = ctx.Req.ParseForm()
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -260,6 +260,11 @@ func (ctx *Context) Params(name string) string {
|
|||
return ctx.params[name]
|
||||
}
|
||||
|
||||
// AllParams returns all params.
|
||||
func (ctx *Context) AllParams() Params {
|
||||
return ctx.params
|
||||
}
|
||||
|
||||
// SetParams sets value of param with given name.
|
||||
func (ctx *Context) SetParams(name, val string) {
|
||||
if name != "*" && !strings.HasPrefix(name, ":") {
|
||||
|
|
|
|||
|
|
@ -153,7 +153,7 @@ func Recovery() Handler {
|
|||
|
||||
res.WriteHeader(http.StatusInternalServerError)
|
||||
if nil != body {
|
||||
res.Write(body)
|
||||
_, _ = res.Write(body)
|
||||
}
|
||||
}
|
||||
}()
|
||||
|
|
|
|||
|
|
@ -36,7 +36,6 @@ import (
|
|||
|
||||
const (
|
||||
_CONTENT_TYPE = "Content-Type"
|
||||
_CONTENT_LENGTH = "Content-Length"
|
||||
_CONTENT_BINARY = "application/octet-stream"
|
||||
_CONTENT_JSON = "application/json"
|
||||
_CONTENT_HTML = "text/html"
|
||||
|
|
@ -200,7 +199,7 @@ func NewTemplateFileSystem(opt RenderOptions, omitData bool) TplFileSystem {
|
|||
lastDir := dirs[len(dirs)-1]
|
||||
|
||||
// We still walk the last (original) directory because it's non-sense we load templates not exist in original directory.
|
||||
if err = filepath.Walk(lastDir, func(path string, info os.FileInfo, err error) error {
|
||||
if err = filepath.Walk(lastDir, func(path string, info os.FileInfo, _ error) error {
|
||||
r, err := filepath.Rel(lastDir, path)
|
||||
if err != nil {
|
||||
return err
|
||||
|
|
@ -458,9 +457,9 @@ func (r *TplRender) JSON(status int, v interface{}) {
|
|||
r.Header().Set(_CONTENT_TYPE, _CONTENT_JSON+r.CompiledCharset)
|
||||
r.WriteHeader(status)
|
||||
if len(r.Opt.PrefixJSON) > 0 {
|
||||
r.Write(r.Opt.PrefixJSON)
|
||||
_, _ = r.Write(r.Opt.PrefixJSON)
|
||||
}
|
||||
r.Write(result)
|
||||
_, _ = r.Write(result)
|
||||
}
|
||||
|
||||
func (r *TplRender) JSONString(v interface{}) (string, error) {
|
||||
|
|
@ -494,9 +493,9 @@ func (r *TplRender) XML(status int, v interface{}) {
|
|||
r.Header().Set(_CONTENT_TYPE, _CONTENT_XML+r.CompiledCharset)
|
||||
r.WriteHeader(status)
|
||||
if len(r.Opt.PrefixXML) > 0 {
|
||||
r.Write(r.Opt.PrefixXML)
|
||||
_, _ = r.Write(r.Opt.PrefixXML)
|
||||
}
|
||||
r.Write(result)
|
||||
_, _ = r.Write(result)
|
||||
}
|
||||
|
||||
func (r *TplRender) data(status int, contentType string, v []byte) {
|
||||
|
|
@ -504,7 +503,7 @@ func (r *TplRender) data(status int, contentType string, v []byte) {
|
|||
r.Header().Set(_CONTENT_TYPE, contentType)
|
||||
}
|
||||
r.WriteHeader(status)
|
||||
r.Write(v)
|
||||
_, _ = r.Write(v)
|
||||
}
|
||||
|
||||
func (r *TplRender) RawData(status int, v []byte) {
|
||||
|
|
@ -612,7 +611,7 @@ func (r *TplRender) HTMLString(name string, data interface{}, htmlOpt ...HTMLOpt
|
|||
func (r *TplRender) Error(status int, message ...string) {
|
||||
r.WriteHeader(status)
|
||||
if len(message) > 0 {
|
||||
r.Write([]byte(message[0]))
|
||||
_, _ = r.Write([]byte(message[0]))
|
||||
}
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@ package macaron
|
|||
|
||||
import (
|
||||
"bufio"
|
||||
"fmt"
|
||||
"errors"
|
||||
"net"
|
||||
"net/http"
|
||||
)
|
||||
|
|
@ -27,6 +27,7 @@ import (
|
|||
type ResponseWriter interface {
|
||||
http.ResponseWriter
|
||||
http.Flusher
|
||||
http.Pusher
|
||||
// Status returns the status code of the response or 0 if the response has not been written.
|
||||
Status() int
|
||||
// Written returns whether or not the ResponseWriter has been written.
|
||||
|
|
@ -91,11 +92,12 @@ func (rw *responseWriter) Before(before BeforeFunc) {
|
|||
func (rw *responseWriter) Hijack() (net.Conn, *bufio.ReadWriter, error) {
|
||||
hijacker, ok := rw.ResponseWriter.(http.Hijacker)
|
||||
if !ok {
|
||||
return nil, nil, fmt.Errorf("the ResponseWriter doesn't support the Hijacker interface")
|
||||
return nil, nil, errors.New("the ResponseWriter doesn't support the Hijacker interface")
|
||||
}
|
||||
return hijacker.Hijack()
|
||||
}
|
||||
|
||||
//nolint
|
||||
func (rw *responseWriter) CloseNotify() <-chan bool {
|
||||
return rw.ResponseWriter.(http.CloseNotifier).CloseNotify()
|
||||
}
|
||||
|
|
@ -112,3 +114,11 @@ func (rw *responseWriter) Flush() {
|
|||
flusher.Flush()
|
||||
}
|
||||
}
|
||||
|
||||
func (rw *responseWriter) Push(target string, opts *http.PushOptions) error {
|
||||
pusher, ok := rw.ResponseWriter.(http.Pusher)
|
||||
if !ok {
|
||||
return errors.New("the ResponseWriter doesn't support the Pusher interface")
|
||||
}
|
||||
return pusher.Push(target, opts)
|
||||
}
|
||||
|
|
|
|||
|
|
@ -68,9 +68,9 @@ func defaultReturnHandler() ReturnHandler {
|
|||
respVal = respVal.Elem()
|
||||
}
|
||||
if isByteSlice(respVal) {
|
||||
resp.Write(respVal.Bytes())
|
||||
_, _ = resp.Write(respVal.Bytes())
|
||||
} else {
|
||||
resp.Write([]byte(respVal.String()))
|
||||
_, _ = resp.Write([]byte(respVal.String()))
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@ package macaron
|
|||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
"log"
|
||||
"net/http"
|
||||
"path"
|
||||
|
|
@ -148,9 +149,15 @@ func staticHandler(ctx *Context, log *log.Logger, opt StaticOptions) bool {
|
|||
|
||||
// Try to serve index file
|
||||
if fi.IsDir() {
|
||||
redirPath := path.Clean(ctx.Req.URL.Path)
|
||||
// path.Clean removes the trailing slash, so we need to add it back when
|
||||
// the original path has it.
|
||||
if strings.HasSuffix(ctx.Req.URL.Path, "/") {
|
||||
redirPath = redirPath + "/"
|
||||
}
|
||||
// Redirect if missing trailing slash.
|
||||
if !strings.HasSuffix(ctx.Req.URL.Path, "/") {
|
||||
http.Redirect(ctx.Resp, ctx.Req.Request, ctx.Req.URL.Path+"/", http.StatusFound)
|
||||
if !strings.HasSuffix(redirPath, "/") {
|
||||
http.Redirect(ctx.Resp, ctx.Req.Request, redirPath+"/", http.StatusFound)
|
||||
return true
|
||||
}
|
||||
|
||||
|
|
@ -177,8 +184,12 @@ func staticHandler(ctx *Context, log *log.Logger, opt StaticOptions) bool {
|
|||
}
|
||||
|
||||
if opt.ETag {
|
||||
tag := GenerateETag(string(fi.Size()), fi.Name(), fi.ModTime().UTC().Format(http.TimeFormat))
|
||||
tag := `"` + GenerateETag(fmt.Sprintf("%d", fi.Size()), fi.Name(), fi.ModTime().UTC().Format(http.TimeFormat)) + `"`
|
||||
ctx.Resp.Header().Set("ETag", tag)
|
||||
if ctx.Req.Header.Get("If-None-Match") == tag {
|
||||
ctx.Resp.WriteHeader(http.StatusNotModified)
|
||||
return true
|
||||
}
|
||||
}
|
||||
|
||||
http.ServeContent(ctx.Resp, ctx.Req.Request, file, fi.ModTime(), f)
|
||||
|
|
|
|||
|
|
@ -80,9 +80,7 @@ type advancedState struct {
|
|||
// deflate state
|
||||
length int
|
||||
offset int
|
||||
hash uint32
|
||||
maxInsertIndex int
|
||||
ii uint16 // position of last match, intended to overflow to reset.
|
||||
|
||||
// Input hash chains
|
||||
// hashHead[hashValue] contains the largest inputIndex with the specified hash value
|
||||
|
|
@ -97,6 +95,9 @@ type advancedState struct {
|
|||
// input window: unprocessed data is window[index:windowEnd]
|
||||
index int
|
||||
hashMatch [maxMatchLength + minMatchLength]uint32
|
||||
|
||||
hash uint32
|
||||
ii uint16 // position of last match, intended to overflow to reset.
|
||||
}
|
||||
|
||||
type compressor struct {
|
||||
|
|
@ -107,18 +108,19 @@ type compressor struct {
|
|||
// compression algorithm
|
||||
fill func(*compressor, []byte) int // copy data to window
|
||||
step func(*compressor) // process window
|
||||
sync bool // requesting flush
|
||||
|
||||
window []byte
|
||||
windowEnd int
|
||||
blockStart int // window index where current tokens start
|
||||
byteAvailable bool // if true, still need to process window[index-1].
|
||||
err error
|
||||
|
||||
// queued output tokens
|
||||
tokens tokens
|
||||
fast fastEnc
|
||||
state *advancedState
|
||||
|
||||
sync bool // requesting flush
|
||||
byteAvailable bool // if true, still need to process window[index-1].
|
||||
}
|
||||
|
||||
func (d *compressor) fillDeflate(b []byte) int {
|
||||
|
|
|
|||
|
|
@ -295,10 +295,6 @@ type decompressor struct {
|
|||
r Reader
|
||||
roffset int64
|
||||
|
||||
// Input bits, in top of b.
|
||||
b uint32
|
||||
nb uint
|
||||
|
||||
// Huffman decoders for literal/length, distance.
|
||||
h1, h2 huffmanDecoder
|
||||
|
||||
|
|
@ -309,19 +305,24 @@ type decompressor struct {
|
|||
// Output history, buffer.
|
||||
dict dictDecoder
|
||||
|
||||
// Temporary buffer (avoids repeated allocation).
|
||||
buf [4]byte
|
||||
|
||||
// Next step in the decompression,
|
||||
// and decompression state.
|
||||
step func(*decompressor)
|
||||
stepState int
|
||||
final bool
|
||||
err error
|
||||
toRead []byte
|
||||
hl, hd *huffmanDecoder
|
||||
copyLen int
|
||||
copyDist int
|
||||
|
||||
// Temporary buffer (avoids repeated allocation).
|
||||
buf [4]byte
|
||||
|
||||
// Input bits, in top of b.
|
||||
b uint32
|
||||
|
||||
nb uint
|
||||
final bool
|
||||
}
|
||||
|
||||
func (f *decompressor) nextBlock() {
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
package fse
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
)
|
||||
|
|
@ -34,8 +35,12 @@ func (b *bitReader) init(in []byte) error {
|
|||
}
|
||||
b.bitsRead = 64
|
||||
b.value = 0
|
||||
if len(in) >= 8 {
|
||||
b.fillFastStart()
|
||||
} else {
|
||||
b.fill()
|
||||
b.fill()
|
||||
}
|
||||
b.bitsRead += 8 - uint8(highBits(uint32(v)))
|
||||
return nil
|
||||
}
|
||||
|
|
@ -63,8 +68,9 @@ func (b *bitReader) fillFast() {
|
|||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
v := b.in[b.off-4 : b.off]
|
||||
// 2 bounds checks.
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
|
|
@ -77,7 +83,8 @@ func (b *bitReader) fill() {
|
|||
return
|
||||
}
|
||||
if b.off > 4 {
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
|
|
@ -91,9 +98,17 @@ func (b *bitReader) fill() {
|
|||
}
|
||||
}
|
||||
|
||||
// fillFastStart() assumes the bitreader is empty and there is at least 8 bytes to read.
|
||||
func (b *bitReader) fillFastStart() {
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
|
||||
b.bitsRead = 0
|
||||
b.off -= 8
|
||||
}
|
||||
|
||||
// finished returns true if all bits have been read from the bit stream.
|
||||
func (b *bitReader) finished() bool {
|
||||
return b.off == 0 && b.bitsRead >= 64
|
||||
return b.bitsRead >= 64 && b.off == 0
|
||||
}
|
||||
|
||||
// close the bitstream and returns an error if out-of-buffer reads occurred.
|
||||
|
|
|
|||
|
|
@ -25,19 +25,10 @@ func (b *byteReader) advance(n uint) {
|
|||
b.off += int(n)
|
||||
}
|
||||
|
||||
// Int32 returns a little endian int32 starting at current offset.
|
||||
func (b byteReader) Int32() int32 {
|
||||
b2 := b.b[b.off : b.off+4 : b.off+4]
|
||||
v3 := int32(b2[3])
|
||||
v2 := int32(b2[2])
|
||||
v1 := int32(b2[1])
|
||||
v0 := int32(b2[0])
|
||||
return v0 | (v1 << 8) | (v2 << 16) | (v3 << 24)
|
||||
}
|
||||
|
||||
// Uint32 returns a little endian uint32 starting at current offset.
|
||||
func (b byteReader) Uint32() uint32 {
|
||||
b2 := b.b[b.off : b.off+4 : b.off+4]
|
||||
b2 := b.b[b.off:]
|
||||
b2 = b2[:4]
|
||||
v3 := uint32(b2[3])
|
||||
v2 := uint32(b2[2])
|
||||
v1 := uint32(b2[1])
|
||||
|
|
|
|||
|
|
@ -46,15 +46,11 @@ type Scratch struct {
|
|||
// Private
|
||||
count [maxSymbolValue + 1]uint32
|
||||
norm [maxSymbolValue + 1]int16
|
||||
symbolLen uint16 // Length of active part of the symbol table.
|
||||
actualTableLog uint8 // Selected tablelog.
|
||||
br byteReader
|
||||
bits bitReader
|
||||
bw bitWriter
|
||||
ct cTable // Compression tables.
|
||||
decTable []decSymbol // Decompression table.
|
||||
zeroBits bool // no bits has prob > 50%.
|
||||
clearCount bool // clear count
|
||||
maxCount int // count of the most probable symbol
|
||||
|
||||
// Per block parameters.
|
||||
|
|
@ -68,17 +64,22 @@ type Scratch struct {
|
|||
// and allocation will be avoided.
|
||||
Out []byte
|
||||
|
||||
// MaxSymbolValue will override the maximum symbol value of the next block.
|
||||
MaxSymbolValue uint8
|
||||
|
||||
// TableLog will attempt to override the tablelog for the next block.
|
||||
TableLog uint8
|
||||
|
||||
// DecompressLimit limits the maximum decoded size acceptable.
|
||||
// If > 0 decompression will stop when approximately this many bytes
|
||||
// has been decoded.
|
||||
// If 0, maximum size will be 2GB.
|
||||
DecompressLimit int
|
||||
|
||||
symbolLen uint16 // Length of active part of the symbol table.
|
||||
actualTableLog uint8 // Selected tablelog.
|
||||
zeroBits bool // no bits has prob > 50%.
|
||||
clearCount bool // clear count
|
||||
|
||||
// MaxSymbolValue will override the maximum symbol value of the next block.
|
||||
MaxSymbolValue uint8
|
||||
|
||||
// TableLog will attempt to override the tablelog for the next block.
|
||||
TableLog uint8
|
||||
}
|
||||
|
||||
// Histogram allows to populate the histogram and skip that step in the compression,
|
||||
|
|
|
|||
|
|
@ -37,13 +37,13 @@ type Writer struct {
|
|||
Header // written at first call to Write, Flush, or Close
|
||||
w io.Writer
|
||||
level int
|
||||
wroteHeader bool
|
||||
err error
|
||||
compressor *flate.Writer
|
||||
digest uint32 // CRC-32, IEEE polynomial (section 8)
|
||||
size uint32 // Uncompressed size (section 2.3.1)
|
||||
wroteHeader bool
|
||||
closed bool
|
||||
buf [10]byte
|
||||
err error
|
||||
}
|
||||
|
||||
// NewWriter returns a new Writer.
|
||||
|
|
|
|||
|
|
@ -12,8 +12,6 @@ but it can be used as a secondary step to compressors (like Snappy) that does no
|
|||
|
||||
* [Godoc documentation](https://godoc.org/github.com/klauspost/compress/huff0)
|
||||
|
||||
THIS PACKAGE IS NOT CONSIDERED STABLE AND API OR ENCODING MAY CHANGE IN THE FUTURE.
|
||||
|
||||
## News
|
||||
|
||||
* Mar 2018: First implementation released. Consider this beta software for now.
|
||||
|
|
@ -75,6 +73,8 @@ which can be given to the decompressor.
|
|||
Decompressing is done by calling the [`Decompress1X`](https://godoc.org/github.com/klauspost/compress/huff0#Scratch.Decompress1X)
|
||||
or [`Decompress4X`](https://godoc.org/github.com/klauspost/compress/huff0#Scratch.Decompress4X) function.
|
||||
|
||||
For concurrently decompressing content with a fixed table a stateless [`Decoder`](https://godoc.org/github.com/klauspost/compress/huff0#Decoder) can be requested which will remain correct as long as the scratch is unchanged. The capacity of the provided slice indicates the expected output size.
|
||||
|
||||
You must provide the output from the compression stage, at exactly the size you got back. If you receive an error back
|
||||
your input was likely corrupted.
|
||||
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@
|
|||
package huff0
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
)
|
||||
|
|
@ -34,29 +35,16 @@ func (b *bitReader) init(in []byte) error {
|
|||
}
|
||||
b.bitsRead = 64
|
||||
b.value = 0
|
||||
if len(in) >= 8 {
|
||||
b.fillFastStart()
|
||||
} else {
|
||||
b.fill()
|
||||
b.fill()
|
||||
}
|
||||
b.bitsRead += 8 - uint8(highBit32(uint32(v)))
|
||||
return nil
|
||||
}
|
||||
|
||||
// getBits will return n bits. n can be 0.
|
||||
func (b *bitReader) getBits(n uint8) uint16 {
|
||||
if n == 0 || b.bitsRead >= 64 {
|
||||
return 0
|
||||
}
|
||||
return b.getBitsFast(n)
|
||||
}
|
||||
|
||||
// getBitsFast requires that at least one bit is requested every time.
|
||||
// There are no checks if the buffer is filled.
|
||||
func (b *bitReader) getBitsFast(n uint8) uint16 {
|
||||
const regMask = 64 - 1
|
||||
v := uint16((b.value << (b.bitsRead & regMask)) >> ((regMask + 1 - n) & regMask))
|
||||
b.bitsRead += n
|
||||
return v
|
||||
}
|
||||
|
||||
// peekBitsFast requires that at least one bit is requested every time.
|
||||
// There are no checks if the buffer is filled.
|
||||
func (b *bitReader) peekBitsFast(n uint8) uint16 {
|
||||
|
|
@ -71,21 +59,36 @@ func (b *bitReader) fillFast() {
|
|||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
|
||||
// 2 bounds checks.
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
}
|
||||
|
||||
func (b *bitReader) advance(n uint8) {
|
||||
b.bitsRead += n
|
||||
}
|
||||
|
||||
// fillFastStart() assumes the bitreader is empty and there is at least 8 bytes to read.
|
||||
func (b *bitReader) fillFastStart() {
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
|
||||
b.bitsRead = 0
|
||||
b.off -= 8
|
||||
}
|
||||
|
||||
// fill() will make sure at least 32 bits are available.
|
||||
func (b *bitReader) fill() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
if b.off > 4 {
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
|
|
@ -113,3 +116,214 @@ func (b *bitReader) close() error {
|
|||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// bitReader reads a bitstream in reverse.
|
||||
// The last set bit indicates the start of the stream and is used
|
||||
// for aligning the input.
|
||||
type bitReaderBytes struct {
|
||||
in []byte
|
||||
off uint // next byte to read is at in[off - 1]
|
||||
value uint64
|
||||
bitsRead uint8
|
||||
}
|
||||
|
||||
// init initializes and resets the bit reader.
|
||||
func (b *bitReaderBytes) init(in []byte) error {
|
||||
if len(in) < 1 {
|
||||
return errors.New("corrupt stream: too short")
|
||||
}
|
||||
b.in = in
|
||||
b.off = uint(len(in))
|
||||
// The highest bit of the last byte indicates where to start
|
||||
v := in[len(in)-1]
|
||||
if v == 0 {
|
||||
return errors.New("corrupt stream, did not find end of stream")
|
||||
}
|
||||
b.bitsRead = 64
|
||||
b.value = 0
|
||||
if len(in) >= 8 {
|
||||
b.fillFastStart()
|
||||
} else {
|
||||
b.fill()
|
||||
b.fill()
|
||||
}
|
||||
b.advance(8 - uint8(highBit32(uint32(v))))
|
||||
return nil
|
||||
}
|
||||
|
||||
// peekBitsFast requires that at least one bit is requested every time.
|
||||
// There are no checks if the buffer is filled.
|
||||
func (b *bitReaderBytes) peekByteFast() uint8 {
|
||||
got := uint8(b.value >> 56)
|
||||
return got
|
||||
}
|
||||
|
||||
func (b *bitReaderBytes) advance(n uint8) {
|
||||
b.bitsRead += n
|
||||
b.value <<= n & 63
|
||||
}
|
||||
|
||||
// fillFast() will make sure at least 32 bits are available.
|
||||
// There must be at least 4 bytes available.
|
||||
func (b *bitReaderBytes) fillFast() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
|
||||
// 2 bounds checks.
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value |= uint64(low) << (b.bitsRead - 32)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
}
|
||||
|
||||
// fillFastStart() assumes the bitReaderBytes is empty and there is at least 8 bytes to read.
|
||||
func (b *bitReaderBytes) fillFastStart() {
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
|
||||
b.bitsRead = 0
|
||||
b.off -= 8
|
||||
}
|
||||
|
||||
// fill() will make sure at least 32 bits are available.
|
||||
func (b *bitReaderBytes) fill() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
if b.off > 4 {
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value |= uint64(low) << (b.bitsRead - 32)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
return
|
||||
}
|
||||
for b.off > 0 {
|
||||
b.value |= uint64(b.in[b.off-1]) << (b.bitsRead - 8)
|
||||
b.bitsRead -= 8
|
||||
b.off--
|
||||
}
|
||||
}
|
||||
|
||||
// finished returns true if all bits have been read from the bit stream.
|
||||
func (b *bitReaderBytes) finished() bool {
|
||||
return b.off == 0 && b.bitsRead >= 64
|
||||
}
|
||||
|
||||
// close the bitstream and returns an error if out-of-buffer reads occurred.
|
||||
func (b *bitReaderBytes) close() error {
|
||||
// Release reference.
|
||||
b.in = nil
|
||||
if b.bitsRead > 64 {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// bitReaderShifted reads a bitstream in reverse.
|
||||
// The last set bit indicates the start of the stream and is used
|
||||
// for aligning the input.
|
||||
type bitReaderShifted struct {
|
||||
in []byte
|
||||
off uint // next byte to read is at in[off - 1]
|
||||
value uint64
|
||||
bitsRead uint8
|
||||
}
|
||||
|
||||
// init initializes and resets the bit reader.
|
||||
func (b *bitReaderShifted) init(in []byte) error {
|
||||
if len(in) < 1 {
|
||||
return errors.New("corrupt stream: too short")
|
||||
}
|
||||
b.in = in
|
||||
b.off = uint(len(in))
|
||||
// The highest bit of the last byte indicates where to start
|
||||
v := in[len(in)-1]
|
||||
if v == 0 {
|
||||
return errors.New("corrupt stream, did not find end of stream")
|
||||
}
|
||||
b.bitsRead = 64
|
||||
b.value = 0
|
||||
if len(in) >= 8 {
|
||||
b.fillFastStart()
|
||||
} else {
|
||||
b.fill()
|
||||
b.fill()
|
||||
}
|
||||
b.advance(8 - uint8(highBit32(uint32(v))))
|
||||
return nil
|
||||
}
|
||||
|
||||
// peekBitsFast requires that at least one bit is requested every time.
|
||||
// There are no checks if the buffer is filled.
|
||||
func (b *bitReaderShifted) peekBitsFast(n uint8) uint16 {
|
||||
return uint16(b.value >> ((64 - n) & 63))
|
||||
}
|
||||
|
||||
func (b *bitReaderShifted) advance(n uint8) {
|
||||
b.bitsRead += n
|
||||
b.value <<= n & 63
|
||||
}
|
||||
|
||||
// fillFast() will make sure at least 32 bits are available.
|
||||
// There must be at least 4 bytes available.
|
||||
func (b *bitReaderShifted) fillFast() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
|
||||
// 2 bounds checks.
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value |= uint64(low) << ((b.bitsRead - 32) & 63)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
}
|
||||
|
||||
// fillFastStart() assumes the bitReaderShifted is empty and there is at least 8 bytes to read.
|
||||
func (b *bitReaderShifted) fillFastStart() {
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
|
||||
b.bitsRead = 0
|
||||
b.off -= 8
|
||||
}
|
||||
|
||||
// fill() will make sure at least 32 bits are available.
|
||||
func (b *bitReaderShifted) fill() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
if b.off > 4 {
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value |= uint64(low) << ((b.bitsRead - 32) & 63)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
return
|
||||
}
|
||||
for b.off > 0 {
|
||||
b.value |= uint64(b.in[b.off-1]) << ((b.bitsRead - 8) & 63)
|
||||
b.bitsRead -= 8
|
||||
b.off--
|
||||
}
|
||||
}
|
||||
|
||||
// finished returns true if all bits have been read from the bit stream.
|
||||
func (b *bitReaderShifted) finished() bool {
|
||||
return b.off == 0 && b.bitsRead >= 64
|
||||
}
|
||||
|
||||
// close the bitstream and returns an error if out-of-buffer reads occurred.
|
||||
func (b *bitReaderShifted) close() error {
|
||||
// Release reference.
|
||||
b.in = nil
|
||||
if b.bitsRead > 64 {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
|
|
|||
|
|
@ -43,6 +43,11 @@ func (b *bitWriter) addBits16Clean(value uint16, bits uint8) {
|
|||
func (b *bitWriter) encSymbol(ct cTable, symbol byte) {
|
||||
enc := ct[symbol]
|
||||
b.bitContainer |= uint64(enc.val) << (b.nBits & 63)
|
||||
if false {
|
||||
if enc.nBits == 0 {
|
||||
panic("nbits 0")
|
||||
}
|
||||
}
|
||||
b.nBits += enc.nBits
|
||||
}
|
||||
|
||||
|
|
@ -54,6 +59,14 @@ func (b *bitWriter) encTwoSymbols(ct cTable, av, bv byte) {
|
|||
sh := b.nBits & 63
|
||||
combined := uint64(encA.val) | (uint64(encB.val) << (encA.nBits & 63))
|
||||
b.bitContainer |= combined << sh
|
||||
if false {
|
||||
if encA.nBits == 0 {
|
||||
panic("nbitsA 0")
|
||||
}
|
||||
if encB.nBits == 0 {
|
||||
panic("nbitsB 0")
|
||||
}
|
||||
}
|
||||
b.nBits += encA.nBits + encB.nBits
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -77,8 +77,11 @@ func compress(in []byte, s *Scratch, compressor func(src []byte) ([]byte, error)
|
|||
// Each symbol present maximum once or too well distributed.
|
||||
return nil, false, ErrIncompressible
|
||||
}
|
||||
|
||||
if s.Reuse == ReusePolicyPrefer && canReuse {
|
||||
if s.Reuse == ReusePolicyMust && !canReuse {
|
||||
// We must reuse, but we can't.
|
||||
return nil, false, ErrIncompressible
|
||||
}
|
||||
if (s.Reuse == ReusePolicyPrefer || s.Reuse == ReusePolicyMust) && canReuse {
|
||||
keepTable := s.cTable
|
||||
keepTL := s.actualTableLog
|
||||
s.cTable = s.prevTable
|
||||
|
|
@ -90,6 +93,9 @@ func compress(in []byte, s *Scratch, compressor func(src []byte) ([]byte, error)
|
|||
s.OutData = s.Out
|
||||
return s.Out, true, nil
|
||||
}
|
||||
if s.Reuse == ReusePolicyMust {
|
||||
return nil, false, ErrIncompressible
|
||||
}
|
||||
// Do not attempt to re-use later.
|
||||
s.prevTable = s.prevTable[:0]
|
||||
}
|
||||
|
|
|
|||
File diff suppressed because it is too large
Load Diff
|
|
@ -55,6 +55,9 @@ const (
|
|||
// ReusePolicyNone will disable re-use of tables.
|
||||
// This is slightly faster than ReusePolicyAllow but may produce larger output.
|
||||
ReusePolicyNone
|
||||
|
||||
// ReusePolicyMust must allow reuse and produce smaller output.
|
||||
ReusePolicyMust
|
||||
)
|
||||
|
||||
type Scratch struct {
|
||||
|
|
@ -79,6 +82,13 @@ type Scratch struct {
|
|||
// Slice of the returned data.
|
||||
OutData []byte
|
||||
|
||||
// MaxDecodedSize will set the maximum allowed output size.
|
||||
// This value will automatically be set to BlockSizeMax if not set.
|
||||
// Decoders will return ErrMaxDecodedSizeExceeded is this limit is exceeded.
|
||||
MaxDecodedSize int
|
||||
|
||||
br byteReader
|
||||
|
||||
// MaxSymbolValue will override the maximum symbol value of the next block.
|
||||
MaxSymbolValue uint8
|
||||
|
||||
|
|
@ -95,12 +105,6 @@ type Scratch struct {
|
|||
// If WantLogLess == 0 any improvement will do.
|
||||
WantLogLess uint8
|
||||
|
||||
// MaxDecodedSize will set the maximum allowed output size.
|
||||
// This value will automatically be set to BlockSizeMax if not set.
|
||||
// Decoders will return ErrMaxDecodedSizeExceeded is this limit is exceeded.
|
||||
MaxDecodedSize int
|
||||
|
||||
br byteReader
|
||||
symbolLen uint16 // Length of active part of the symbol table.
|
||||
maxCount int // count of the most probable symbol
|
||||
clearCount bool // clear count
|
||||
|
|
|
|||
|
|
@ -5,11 +5,9 @@ It offers a very wide range of compression / speed trade-off, while being backed
|
|||
A high performance compression algorithm is implemented. For now focused on speed.
|
||||
|
||||
This package provides [compression](#Compressor) to and [decompression](#Decompressor) of Zstandard content.
|
||||
Note that custom dictionaries are not supported yet, so if your code relies on that,
|
||||
you cannot use the package as-is.
|
||||
Note that custom dictionaries are only supported for decompression.
|
||||
|
||||
This package is pure Go and without use of "unsafe".
|
||||
If a significant speedup can be achieved using "unsafe", it may be added as an option later.
|
||||
|
||||
The `zstd` package is provided as open source software using a Go standard license.
|
||||
|
||||
|
|
@ -142,80 +140,96 @@ Using the Encoder for both a stream and individual blocks concurrently is safe.
|
|||
I have collected some speed examples to compare speed and compression against other compressors.
|
||||
|
||||
* `file` is the input file.
|
||||
* `out` is the compressor used. `zskp` is this package. `gzstd` is gzip standard library. `zstd` is the Datadog cgo library.
|
||||
* `out` is the compressor used. `zskp` is this package. `zstd` is the Datadog cgo library. `gzstd/gzkp` is gzip standard and this library.
|
||||
* `level` is the compression level used. For `zskp` level 1 is "fastest", level 2 is "default".
|
||||
* `insize`/`outsize` is the input/output size.
|
||||
* `millis` is the number of milliseconds used for compression.
|
||||
* `mb/s` is megabytes (2^20 bytes) per second.
|
||||
|
||||
```
|
||||
The test data for the Large Text Compression Benchmark is the first
|
||||
10^9 bytes of the English Wikipedia dump on Mar. 3, 2006.
|
||||
http://mattmahoney.net/dc/textdata.html
|
||||
Silesia Corpus:
|
||||
http://sun.aei.polsl.pl/~sdeor/corpus/silesia.zip
|
||||
|
||||
This package:
|
||||
file out level insize outsize millis mb/s
|
||||
enwik9 zskp 1 1000000000 343833033 5840 163.30
|
||||
enwik9 zskp 2 1000000000 317822183 8449 112.87
|
||||
enwik9 gzstd 1 1000000000 382578136 13627 69.98
|
||||
enwik9 gzstd 3 1000000000 349139651 22344 42.68
|
||||
enwik9 zstd 1 1000000000 357416379 4838 197.12
|
||||
enwik9 zstd 3 1000000000 313734522 7556 126.21
|
||||
silesia.tar zskp 1 211947520 73101992 643 313.87
|
||||
silesia.tar zskp 2 211947520 67504318 969 208.38
|
||||
silesia.tar zskp 3 211947520 65177448 1899 106.44
|
||||
|
||||
cgo zstd:
|
||||
silesia.tar zstd 1 211947520 73605392 543 371.56
|
||||
silesia.tar zstd 3 211947520 66793289 864 233.68
|
||||
silesia.tar zstd 6 211947520 62916450 1913 105.66
|
||||
|
||||
gzip, stdlib/this package:
|
||||
silesia.tar gzstd 1 211947520 80007735 1654 122.21
|
||||
silesia.tar gzkp 1 211947520 80369488 1168 173.06
|
||||
|
||||
GOB stream of binary data. Highly compressible.
|
||||
https://files.klauspost.com/compress/gob-stream.7z
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
gob-stream zskp 1 1911399616 234981983 5100 357.42
|
||||
gob-stream zskp 2 1911399616 208674003 6698 272.15
|
||||
gob-stream gzstd 1 1911399616 357382641 14727 123.78
|
||||
gob-stream gzstd 3 1911399616 327835097 17005 107.19
|
||||
gob-stream zstd 1 1911399616 250787165 4075 447.22
|
||||
gob-stream zstd 3 1911399616 208191888 5511 330.77
|
||||
gob-stream zskp 1 1911399616 235022249 3088 590.30
|
||||
gob-stream zskp 2 1911399616 205669791 3786 481.34
|
||||
gob-stream zskp 3 1911399616 185792019 9324 195.48
|
||||
gob-stream zstd 1 1911399616 249810424 2637 691.26
|
||||
gob-stream zstd 3 1911399616 208192146 3490 522.31
|
||||
gob-stream zstd 6 1911399616 193632038 6687 272.56
|
||||
gob-stream gzstd 1 1911399616 357382641 10251 177.82
|
||||
gob-stream gzkp 1 1911399616 362156523 5695 320.08
|
||||
|
||||
Highly compressible JSON file. Similar to logs in a lot of ways.
|
||||
https://files.klauspost.com/compress/adresser.001.gz
|
||||
The test data for the Large Text Compression Benchmark is the first
|
||||
10^9 bytes of the English Wikipedia dump on Mar. 3, 2006.
|
||||
http://mattmahoney.net/dc/textdata.html
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
adresser.001 zskp 1 1073741824 18510122 1477 692.83
|
||||
adresser.001 zskp 2 1073741824 19831697 1705 600.59
|
||||
adresser.001 gzstd 1 1073741824 47755503 3079 332.47
|
||||
adresser.001 gzstd 3 1073741824 40052381 3051 335.63
|
||||
adresser.001 zstd 1 1073741824 16135896 994 1030.18
|
||||
adresser.001 zstd 3 1073741824 17794465 905 1131.49
|
||||
enwik9 zskp 1 1000000000 343848582 3609 264.18
|
||||
enwik9 zskp 2 1000000000 317276632 5746 165.97
|
||||
enwik9 zskp 3 1000000000 294540704 11725 81.34
|
||||
enwik9 zstd 1 1000000000 358072021 3110 306.65
|
||||
enwik9 zstd 3 1000000000 313734672 4784 199.35
|
||||
enwik9 zstd 6 1000000000 295138875 10290 92.68
|
||||
enwik9 gzstd 1 1000000000 382578136 9604 99.30
|
||||
enwik9 gzkp 1 1000000000 383825945 6544 145.73
|
||||
|
||||
Highly compressible JSON file.
|
||||
https://files.klauspost.com/compress/github-june-2days-2019.json.zst
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
github-june-2days-2019.json zskp 1 6273951764 699045015 10620 563.40
|
||||
github-june-2days-2019.json zskp 2 6273951764 617881763 11687 511.96
|
||||
github-june-2days-2019.json zskp 3 6273951764 537511906 29252 204.54
|
||||
github-june-2days-2019.json zstd 1 6273951764 766284037 8450 708.00
|
||||
github-june-2days-2019.json zstd 3 6273951764 661889476 10927 547.57
|
||||
github-june-2days-2019.json zstd 6 6273951764 642756859 22996 260.18
|
||||
github-june-2days-2019.json gzstd 1 6273951764 1164400847 29948 199.79
|
||||
github-june-2days-2019.json gzkp 1 6273951764 1128755542 19236 311.03
|
||||
|
||||
VM Image, Linux mint with a few installed applications:
|
||||
https://files.klauspost.com/compress/rawstudio-mint14.7z
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
rawstudio-mint14.tar zskp 1 8558382592 3648168838 33398 244.38
|
||||
rawstudio-mint14.tar zskp 2 8558382592 3376721436 50962 160.16
|
||||
rawstudio-mint14.tar gzstd 1 8558382592 3926257486 84712 96.35
|
||||
rawstudio-mint14.tar gzstd 3 8558382592 3740711978 176344 46.28
|
||||
rawstudio-mint14.tar zstd 1 8558382592 3607859742 27903 292.51
|
||||
rawstudio-mint14.tar zstd 3 8558382592 3341710879 46700 174.77
|
||||
rawstudio-mint14.tar zskp 1 8558382592 3667489370 20210 403.84
|
||||
rawstudio-mint14.tar zskp 2 8558382592 3364592300 31873 256.07
|
||||
rawstudio-mint14.tar zskp 3 8558382592 3224594213 71751 113.75
|
||||
rawstudio-mint14.tar zstd 1 8558382592 3609250104 17136 476.27
|
||||
rawstudio-mint14.tar zstd 3 8558382592 3341679997 29262 278.92
|
||||
rawstudio-mint14.tar zstd 6 8558382592 3235846406 77904 104.77
|
||||
rawstudio-mint14.tar gzstd 1 8558382592 3926257486 57722 141.40
|
||||
rawstudio-mint14.tar gzkp 1 8558382592 3970463184 41749 195.49
|
||||
|
||||
|
||||
The test data is designed to test archivers in realistic backup scenarios.
|
||||
http://mattmahoney.net/dc/10gb.html
|
||||
CSV data:
|
||||
https://files.klauspost.com/compress/nyc-taxi-data-10M.csv.zst
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
10gb.tar zskp 1 10065157632 4883149814 45715 209.97
|
||||
10gb.tar zskp 2 10065157632 4638110010 60970 157.44
|
||||
10gb.tar gzstd 1 10065157632 5198296126 97769 98.18
|
||||
10gb.tar gzstd 3 10065157632 4932665487 313427 30.63
|
||||
10gb.tar zstd 1 10065157632 4940796535 40391 237.65
|
||||
10gb.tar zstd 3 10065157632 4638618579 52911 181.42
|
||||
|
||||
Silesia Corpus:
|
||||
http://sun.aei.polsl.pl/~sdeor/corpus/silesia.zip
|
||||
|
||||
file out level insize outsize millis mb/s
|
||||
silesia.tar zskp 1 211947520 73025800 1108 182.26
|
||||
silesia.tar zskp 2 211947520 67674684 1599 126.41
|
||||
silesia.tar gzstd 1 211947520 80007735 2515 80.37
|
||||
silesia.tar gzstd 3 211947520 73133380 4259 47.45
|
||||
silesia.tar zstd 1 211947520 73513991 933 216.64
|
||||
silesia.tar zstd 3 211947520 66793301 1377 146.79
|
||||
nyc-taxi-data-10M.csv zskp 1 3325605752 641339945 8925 355.35
|
||||
nyc-taxi-data-10M.csv zskp 2 3325605752 591748091 11268 281.44
|
||||
nyc-taxi-data-10M.csv zskp 3 3325605752 538490114 19880 159.53
|
||||
nyc-taxi-data-10M.csv zstd 1 3325605752 687399637 8233 385.18
|
||||
nyc-taxi-data-10M.csv zstd 3 3325605752 598514411 10065 315.07
|
||||
nyc-taxi-data-10M.csv zstd 6 3325605752 570522953 20038 158.27
|
||||
nyc-taxi-data-10M.csv gzstd 1 3325605752 928656485 23876 132.83
|
||||
nyc-taxi-data-10M.csv gzkp 1 3325605752 924718719 16388 193.53
|
||||
```
|
||||
|
||||
### Converters
|
||||
|
|
@ -309,6 +323,20 @@ The decoder can be used for *concurrent* decompression of multiple buffers.
|
|||
It will only allow a certain number of concurrent operations to run.
|
||||
To tweak that yourself use the `WithDecoderConcurrency(n)` option when creating the decoder.
|
||||
|
||||
### Dictionaries
|
||||
|
||||
Data compressed with [dictionaries](https://github.com/facebook/zstd#the-case-for-small-data-compression) can be decompressed.
|
||||
|
||||
Dictionaries are added individually to Decoders.
|
||||
Dictionaries are generated by the `zstd --train` command and contains an initial state for the decoder.
|
||||
To add a dictionary use the `WithDecoderDicts(dicts ...[]byte)` option with the dictionary data.
|
||||
Several dictionaries can be added at once.
|
||||
|
||||
The dictionary will be used automatically for the data that specifies them.
|
||||
A re-used Decoder will still contain the dictionaries registered.
|
||||
|
||||
When registering multiple dictionaries with the same ID, the last one will be used.
|
||||
|
||||
### Allocation-less operation
|
||||
|
||||
The decoder has been designed to operate without allocations after a warmup.
|
||||
|
|
@ -350,36 +378,42 @@ These are some examples of performance compared to [datadog cgo library](https:/
|
|||
The first two are streaming decodes and the last are smaller inputs.
|
||||
|
||||
```
|
||||
BenchmarkDecoderSilesia-8 20 642550210 ns/op 329.85 MB/s 3101 B/op 8 allocs/op
|
||||
BenchmarkDecoderSilesiaCgo-8 100 384930000 ns/op 550.61 MB/s 451878 B/op 9713 allocs/op
|
||||
BenchmarkDecoderSilesia-8 3 385000067 ns/op 550.51 MB/s 5498 B/op 8 allocs/op
|
||||
BenchmarkDecoderSilesiaCgo-8 6 197666567 ns/op 1072.25 MB/s 270672 B/op 8 allocs/op
|
||||
|
||||
BenchmarkDecoderEnwik9-2 10 3146000080 ns/op 317.86 MB/s 2649 B/op 9 allocs/op
|
||||
BenchmarkDecoderEnwik9Cgo-2 20 1905900000 ns/op 524.69 MB/s 1125120 B/op 45785 allocs/op
|
||||
BenchmarkDecoderEnwik9-8 1 2027001600 ns/op 493.34 MB/s 10496 B/op 18 allocs/op
|
||||
BenchmarkDecoderEnwik9Cgo-8 2 979499200 ns/op 1020.93 MB/s 270672 B/op 8 allocs/op
|
||||
|
||||
BenchmarkDecoder_DecodeAll/z000000.zst-8 200 7049994 ns/op 138.26 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000001.zst-8 100000 19560 ns/op 97.49 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000002.zst-8 5000 297599 ns/op 236.99 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000003.zst-8 2000 725502 ns/op 141.17 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000004.zst-8 200000 9314 ns/op 54.54 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000005.zst-8 10000 137500 ns/op 104.72 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000006.zst-8 500 2316009 ns/op 206.06 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000007.zst-8 20000 64499 ns/op 344.90 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000008.zst-8 50000 24900 ns/op 219.56 MB/s 40 B/op 2 allocs/op
|
||||
BenchmarkDecoder_DecodeAll/z000009.zst-8 1000 2348999 ns/op 154.01 MB/s 40 B/op 2 allocs/op
|
||||
Concurrent performance:
|
||||
|
||||
BenchmarkDecoder_DecodeAllCgo/z000000.zst-8 500 4268005 ns/op 228.38 MB/s 1228849 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000001.zst-8 100000 15250 ns/op 125.05 MB/s 2096 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000002.zst-8 10000 147399 ns/op 478.49 MB/s 73776 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000003.zst-8 5000 320798 ns/op 319.27 MB/s 139312 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000004.zst-8 200000 10004 ns/op 50.77 MB/s 560 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000005.zst-8 20000 73599 ns/op 195.64 MB/s 19120 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000006.zst-8 1000 1119003 ns/op 426.48 MB/s 557104 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000007.zst-8 20000 103450 ns/op 215.04 MB/s 71296 B/op 9 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000008.zst-8 100000 20130 ns/op 271.58 MB/s 6192 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllCgo/z000009.zst-8 2000 1123500 ns/op 322.00 MB/s 368688 B/op 3 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/kppkn.gtb.zst-16 28915 42469 ns/op 4340.07 MB/s 114 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/geo.protodata.zst-16 116505 9965 ns/op 11900.16 MB/s 16 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/plrabn12.txt.zst-16 8952 134272 ns/op 3588.70 MB/s 915 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/lcet10.txt.zst-16 11820 102538 ns/op 4161.90 MB/s 594 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/asyoulik.txt.zst-16 34782 34184 ns/op 3661.88 MB/s 60 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/alice29.txt.zst-16 27712 43447 ns/op 3500.58 MB/s 99 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/html_x_4.zst-16 62826 18750 ns/op 21845.10 MB/s 104 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/paper-100k.pdf.zst-16 631545 1794 ns/op 57078.74 MB/s 2 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/fireworks.jpeg.zst-16 1690140 712 ns/op 172938.13 MB/s 1 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/urls.10K.zst-16 10432 113593 ns/op 6180.73 MB/s 1143 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/html.zst-16 113206 10671 ns/op 9596.27 MB/s 15 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallel/comp-data.bin.zst-16 1530615 779 ns/op 5229.49 MB/s 0 B/op 0 allocs/op
|
||||
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/kppkn.gtb.zst-16 65217 16192 ns/op 11383.34 MB/s 46 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/geo.protodata.zst-16 292671 4039 ns/op 29363.19 MB/s 6 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/plrabn12.txt.zst-16 26314 46021 ns/op 10470.43 MB/s 293 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/lcet10.txt.zst-16 33897 34900 ns/op 12227.96 MB/s 205 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/asyoulik.txt.zst-16 104348 11433 ns/op 10949.01 MB/s 20 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/alice29.txt.zst-16 75949 15510 ns/op 9805.60 MB/s 32 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/html_x_4.zst-16 173910 6756 ns/op 60624.29 MB/s 37 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/paper-100k.pdf.zst-16 923076 1339 ns/op 76474.87 MB/s 1 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/fireworks.jpeg.zst-16 922920 1351 ns/op 91102.57 MB/s 2 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/urls.10K.zst-16 27649 43618 ns/op 16096.19 MB/s 407 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/html.zst-16 279073 4160 ns/op 24614.18 MB/s 6 B/op 0 allocs/op
|
||||
BenchmarkDecoder_DecodeAllParallelCgo/comp-data.bin.zst-16 749938 1579 ns/op 2581.71 MB/s 0 B/op 0 allocs/op
|
||||
```
|
||||
|
||||
This reflects the performance around May 2019, but this may be out of date.
|
||||
This reflects the performance around May 2020, but this may be out of date.
|
||||
|
||||
# Contributions
|
||||
|
||||
|
|
|
|||
|
|
@ -5,6 +5,7 @@
|
|||
package zstd
|
||||
|
||||
import (
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"io"
|
||||
"math/bits"
|
||||
|
|
@ -34,8 +35,12 @@ func (b *bitReader) init(in []byte) error {
|
|||
}
|
||||
b.bitsRead = 64
|
||||
b.value = 0
|
||||
if len(in) >= 8 {
|
||||
b.fillFastStart()
|
||||
} else {
|
||||
b.fill()
|
||||
b.fill()
|
||||
}
|
||||
b.bitsRead += 8 - uint8(highBits(uint32(v)))
|
||||
return nil
|
||||
}
|
||||
|
|
@ -63,21 +68,31 @@ func (b *bitReader) fillFast() {
|
|||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
v := b.in[b.off-4 : b.off]
|
||||
// 2 bounds checks.
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
b.off -= 4
|
||||
}
|
||||
|
||||
// fillFastStart() assumes the bitreader is empty and there is at least 8 bytes to read.
|
||||
func (b *bitReader) fillFastStart() {
|
||||
// Do single re-slice to avoid bounds checks.
|
||||
b.value = binary.LittleEndian.Uint64(b.in[b.off-8:])
|
||||
b.bitsRead = 0
|
||||
b.off -= 8
|
||||
}
|
||||
|
||||
// fill() will make sure at least 32 bits are available.
|
||||
func (b *bitReader) fill() {
|
||||
if b.bitsRead < 32 {
|
||||
return
|
||||
}
|
||||
if b.off >= 4 {
|
||||
v := b.in[b.off-4 : b.off]
|
||||
v := b.in[b.off-4:]
|
||||
v = v[:4]
|
||||
low := (uint32(v[0])) | (uint32(v[1]) << 8) | (uint32(v[2]) << 16) | (uint32(v[3]) << 24)
|
||||
b.value = (b.value << 32) | uint64(low)
|
||||
b.bitsRead -= 32
|
||||
|
|
|
|||
|
|
@ -75,21 +75,29 @@ type blockDec struct {
|
|||
|
||||
// Window size of the block.
|
||||
WindowSize uint64
|
||||
Type blockType
|
||||
|
||||
history chan *history
|
||||
input chan struct{}
|
||||
result chan decodeOutput
|
||||
sequenceBuf []seq
|
||||
err error
|
||||
decWG sync.WaitGroup
|
||||
|
||||
// Frame to use for singlethreaded decoding.
|
||||
// Should not be used by the decoder itself since parent may be another frame.
|
||||
localFrame *frameDec
|
||||
|
||||
// Block is RLE, this is the size.
|
||||
RLESize uint32
|
||||
tmp [4]byte
|
||||
|
||||
Type blockType
|
||||
|
||||
// Is this the last block of a frame?
|
||||
Last bool
|
||||
|
||||
// Use less memory
|
||||
lowMem bool
|
||||
history chan *history
|
||||
input chan struct{}
|
||||
result chan decodeOutput
|
||||
sequenceBuf []seq
|
||||
tmp [4]byte
|
||||
err error
|
||||
decWG sync.WaitGroup
|
||||
}
|
||||
|
||||
func (b *blockDec) String() string {
|
||||
|
|
@ -127,25 +135,37 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
|
|||
b.Type = blockType((bh >> 1) & 3)
|
||||
// find size.
|
||||
cSize := int(bh >> 3)
|
||||
maxSize := maxBlockSize
|
||||
switch b.Type {
|
||||
case blockTypeReserved:
|
||||
return ErrReservedBlockType
|
||||
case blockTypeRLE:
|
||||
b.RLESize = uint32(cSize)
|
||||
if b.lowMem {
|
||||
maxSize = cSize
|
||||
}
|
||||
cSize = 1
|
||||
case blockTypeCompressed:
|
||||
if debug {
|
||||
println("Data size on stream:", cSize)
|
||||
}
|
||||
b.RLESize = 0
|
||||
maxSize = maxCompressedBlockSize
|
||||
if windowSize < maxCompressedBlockSize && b.lowMem {
|
||||
maxSize = int(windowSize)
|
||||
}
|
||||
if cSize > maxCompressedBlockSize || uint64(cSize) > b.WindowSize {
|
||||
if debug {
|
||||
printf("compressed block too big: csize:%d block: %+v\n", uint64(cSize), b)
|
||||
}
|
||||
return ErrCompressedSizeTooBig
|
||||
}
|
||||
default:
|
||||
case blockTypeRaw:
|
||||
b.RLESize = 0
|
||||
// We do not need a destination for raw blocks.
|
||||
maxSize = -1
|
||||
default:
|
||||
panic("Invalid block type")
|
||||
}
|
||||
|
||||
// Read block data.
|
||||
|
|
@ -156,8 +176,8 @@ func (b *blockDec) reset(br byteBuffer, windowSize uint64) error {
|
|||
b.dataStorage = make([]byte, 0, maxBlockSize)
|
||||
}
|
||||
}
|
||||
if cap(b.dst) <= maxBlockSize {
|
||||
b.dst = make([]byte, 0, maxBlockSize+1)
|
||||
if cap(b.dst) <= maxSize {
|
||||
b.dst = make([]byte, 0, maxSize+1)
|
||||
}
|
||||
var err error
|
||||
b.data, err = br.readBig(cSize, b.dataStorage)
|
||||
|
|
@ -445,26 +465,22 @@ func (b *blockDec) decodeCompressed(hist *history) error {
|
|||
if huff == nil {
|
||||
huff = &huff0.Scratch{}
|
||||
}
|
||||
huff.Out = b.literalBuf[:0]
|
||||
huff, literals, err = huff0.ReadTable(literals, huff)
|
||||
if err != nil {
|
||||
println("reading huffman table:", err)
|
||||
return err
|
||||
}
|
||||
// Use our out buffer.
|
||||
huff.Out = b.literalBuf[:0]
|
||||
huff.MaxDecodedSize = litRegenSize
|
||||
if fourStreams {
|
||||
literals, err = huff.Decompress4X(literals, litRegenSize)
|
||||
literals, err = huff.Decoder().Decompress4X(b.literalBuf[:0:litRegenSize], literals)
|
||||
} else {
|
||||
literals, err = huff.Decompress1X(literals)
|
||||
literals, err = huff.Decoder().Decompress1X(b.literalBuf[:0:litRegenSize], literals)
|
||||
}
|
||||
if err != nil {
|
||||
println("decoding compressed literals:", err)
|
||||
return err
|
||||
}
|
||||
// Make sure we don't leak our literals buffer
|
||||
huff.Out = nil
|
||||
if len(literals) != litRegenSize {
|
||||
return fmt.Errorf("literal output size mismatch want %d, got %d", litRegenSize, len(literals))
|
||||
}
|
||||
|
|
@ -615,15 +631,12 @@ func (b *blockDec) decodeCompressed(hist *history) error {
|
|||
var err error
|
||||
// Use our out buffer.
|
||||
huff = hist.huffTree
|
||||
huff.Out = b.literalBuf[:0]
|
||||
huff.MaxDecodedSize = litRegenSize
|
||||
if fourStreams {
|
||||
literals, err = huff.Decompress4X(literals, litRegenSize)
|
||||
literals, err = huff.Decoder().Decompress4X(b.literalBuf[:0:litRegenSize], literals)
|
||||
} else {
|
||||
literals, err = huff.Decompress1X(literals)
|
||||
literals, err = huff.Decoder().Decompress1X(b.literalBuf[:0:litRegenSize], literals)
|
||||
}
|
||||
// Make sure we don't leak our literals buffer
|
||||
huff.Out = nil
|
||||
if err != nil {
|
||||
println("decompressing literals:", err)
|
||||
return err
|
||||
|
|
@ -633,12 +646,13 @@ func (b *blockDec) decodeCompressed(hist *history) error {
|
|||
}
|
||||
} else {
|
||||
if hist.huffTree != nil && huff != nil {
|
||||
if hist.dict == nil || hist.dict.litDec != hist.huffTree {
|
||||
huffDecoderPool.Put(hist.huffTree)
|
||||
}
|
||||
hist.huffTree = nil
|
||||
}
|
||||
}
|
||||
if huff != nil {
|
||||
huff.Out = nil
|
||||
hist.huffTree = huff
|
||||
}
|
||||
if debug {
|
||||
|
|
@ -671,12 +685,21 @@ func (b *blockDec) decodeCompressed(hist *history) error {
|
|||
// If only recent offsets were not transferred, this would be an obvious win.
|
||||
// Also, if first 3 sequences don't reference recent offsets, all sequences can be decoded.
|
||||
|
||||
hbytes := hist.b
|
||||
if len(hbytes) > hist.windowSize {
|
||||
hbytes = hbytes[len(hbytes)-hist.windowSize:]
|
||||
// We do not need history any more.
|
||||
if hist.dict != nil {
|
||||
hist.dict.content = nil
|
||||
}
|
||||
}
|
||||
|
||||
if err := seqs.initialize(br, hist, literals, b.dst); err != nil {
|
||||
println("initializing sequences:", err)
|
||||
return err
|
||||
}
|
||||
|
||||
err = seqs.decode(nSeqs, br, hist.b)
|
||||
err = seqs.decode(nSeqs, br, hbytes)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
|
|
|||
|
|
@ -295,7 +295,7 @@ func (b *blockEnc) encodeRaw(a []byte) {
|
|||
b.output = bh.appendTo(b.output[:0])
|
||||
b.output = append(b.output, a...)
|
||||
if debug {
|
||||
println("Adding RAW block, length", len(a))
|
||||
println("Adding RAW block, length", len(a), "last:", b.last)
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -308,7 +308,7 @@ func (b *blockEnc) encodeRawTo(dst, src []byte) []byte {
|
|||
dst = bh.appendTo(dst)
|
||||
dst = append(dst, src...)
|
||||
if debug {
|
||||
println("Adding RAW block, length", len(src))
|
||||
println("Adding RAW block, length", len(src), "last:", b.last)
|
||||
}
|
||||
return dst
|
||||
}
|
||||
|
|
@ -322,7 +322,7 @@ func (b *blockEnc) encodeLits(raw bool) error {
|
|||
// Don't compress extremely small blocks
|
||||
if len(b.literals) < 32 || raw {
|
||||
if debug {
|
||||
println("Adding RAW block, length", len(b.literals))
|
||||
println("Adding RAW block, length", len(b.literals), "last:", b.last)
|
||||
}
|
||||
bh.setType(blockTypeRaw)
|
||||
b.output = bh.appendTo(b.output)
|
||||
|
|
@ -349,7 +349,7 @@ func (b *blockEnc) encodeLits(raw bool) error {
|
|||
switch err {
|
||||
case huff0.ErrIncompressible:
|
||||
if debug {
|
||||
println("Adding RAW block, length", len(b.literals))
|
||||
println("Adding RAW block, length", len(b.literals), "last:", b.last)
|
||||
}
|
||||
bh.setType(blockTypeRaw)
|
||||
b.output = bh.appendTo(b.output)
|
||||
|
|
@ -444,9 +444,9 @@ func fuzzFseEncoder(data []byte) int {
|
|||
}
|
||||
|
||||
// encode will encode the block and append the output in b.output.
|
||||
func (b *blockEnc) encode(raw bool) error {
|
||||
func (b *blockEnc) encode(raw, rawAllLits bool) error {
|
||||
if len(b.sequences) == 0 {
|
||||
return b.encodeLits(raw)
|
||||
return b.encodeLits(rawAllLits)
|
||||
}
|
||||
// We want some difference
|
||||
if len(b.literals) > (b.size - (b.size >> 5)) {
|
||||
|
|
|
|||
|
|
@ -31,7 +31,8 @@ func (b *byteReader) overread() bool {
|
|||
|
||||
// Int32 returns a little endian int32 starting at current offset.
|
||||
func (b byteReader) Int32() int32 {
|
||||
b2 := b.b[b.off : b.off+4 : b.off+4]
|
||||
b2 := b.b[b.off:]
|
||||
b2 = b2[:4]
|
||||
v3 := int32(b2[3])
|
||||
v2 := int32(b2[2])
|
||||
v1 := int32(b2[1])
|
||||
|
|
@ -55,7 +56,20 @@ func (b byteReader) Uint32() uint32 {
|
|||
}
|
||||
return v
|
||||
}
|
||||
b2 := b.b[b.off : b.off+4 : b.off+4]
|
||||
b2 := b.b[b.off:]
|
||||
b2 = b2[:4]
|
||||
v3 := uint32(b2[3])
|
||||
v2 := uint32(b2[2])
|
||||
v1 := uint32(b2[1])
|
||||
v0 := uint32(b2[0])
|
||||
return v0 | (v1 << 8) | (v2 << 16) | (v3 << 24)
|
||||
}
|
||||
|
||||
// Uint32NC returns a little endian uint32 starting at current offset.
|
||||
// The caller must be sure if there are at least 4 bytes left.
|
||||
func (b byteReader) Uint32NC() uint32 {
|
||||
b2 := b.b[b.off:]
|
||||
b2 = b2[:4]
|
||||
v3 := uint32(b2[3])
|
||||
v2 := uint32(b2[2])
|
||||
v1 := uint32(b2[1])
|
||||
|
|
|
|||
|
|
@ -23,17 +23,15 @@ type Decoder struct {
|
|||
// Unreferenced decoders, ready for use.
|
||||
decoders chan *blockDec
|
||||
|
||||
// Unreferenced decoders, ready for use.
|
||||
frames chan *frameDec
|
||||
|
||||
// Streams ready to be decoded.
|
||||
stream chan decodeStream
|
||||
|
||||
// Current read position used for Reader functionality.
|
||||
current decoderState
|
||||
|
||||
// Custom dictionaries
|
||||
dicts map[uint32]struct{}
|
||||
// Custom dictionaries.
|
||||
// Always uses copies.
|
||||
dicts map[uint32]dict
|
||||
|
||||
// streamWg is the waitgroup for all streams
|
||||
streamWg sync.WaitGroup
|
||||
|
|
@ -66,7 +64,7 @@ var (
|
|||
// A Decoder can be used in two modes:
|
||||
//
|
||||
// 1) As a stream, or
|
||||
// 2) For stateless decoding using DecodeAll or DecodeBuffer.
|
||||
// 2) For stateless decoding using DecodeAll.
|
||||
//
|
||||
// Only a single stream can be decoded concurrently, but the same decoder
|
||||
// can run multiple concurrent stateless decodes. It is even possible to
|
||||
|
|
@ -87,12 +85,19 @@ func NewReader(r io.Reader, opts ...DOption) (*Decoder, error) {
|
|||
d.current.output = make(chan decodeOutput, d.o.concurrent)
|
||||
d.current.flushed = true
|
||||
|
||||
// Transfer option dicts.
|
||||
d.dicts = make(map[uint32]dict, len(d.o.dicts))
|
||||
for _, dc := range d.o.dicts {
|
||||
d.dicts[dc.id] = dc
|
||||
}
|
||||
d.o.dicts = nil
|
||||
|
||||
// Create decoders
|
||||
d.decoders = make(chan *blockDec, d.o.concurrent)
|
||||
d.frames = make(chan *frameDec, d.o.concurrent)
|
||||
for i := 0; i < d.o.concurrent; i++ {
|
||||
d.frames <- newFrameDec(d.o)
|
||||
d.decoders <- newBlockDec(d.o.lowMem)
|
||||
dec := newBlockDec(d.o.lowMem)
|
||||
dec.localFrame = newFrameDec(d.o)
|
||||
d.decoders <- dec
|
||||
}
|
||||
|
||||
if r == nil {
|
||||
|
|
@ -169,7 +174,12 @@ func (d *Decoder) Reset(r io.Reader) error {
|
|||
println("*bytes.Buffer detected, doing sync decode, len:", bb.Len())
|
||||
}
|
||||
b := bb.Bytes()
|
||||
dst, err := d.DecodeAll(b, nil)
|
||||
var dst []byte
|
||||
if cap(d.current.b) > 0 {
|
||||
dst = d.current.b
|
||||
}
|
||||
|
||||
dst, err := d.DecodeAll(b, dst[:0])
|
||||
if err == nil {
|
||||
err = io.EOF
|
||||
}
|
||||
|
|
@ -277,23 +287,31 @@ func (d *Decoder) DecodeAll(input, dst []byte) ([]byte, error) {
|
|||
}
|
||||
|
||||
// Grab a block decoder and frame decoder.
|
||||
block, frame := <-d.decoders, <-d.frames
|
||||
block := <-d.decoders
|
||||
frame := block.localFrame
|
||||
defer func() {
|
||||
if debug {
|
||||
printf("re-adding decoder: %p", block)
|
||||
}
|
||||
d.decoders <- block
|
||||
frame.rawInput = nil
|
||||
frame.bBuf = nil
|
||||
d.frames <- frame
|
||||
d.decoders <- block
|
||||
}()
|
||||
frame.bBuf = input
|
||||
|
||||
for {
|
||||
frame.history.reset()
|
||||
err := frame.reset(&frame.bBuf)
|
||||
if err == io.EOF {
|
||||
return dst, nil
|
||||
}
|
||||
if frame.DictionaryID != nil {
|
||||
dict, ok := d.dicts[*frame.DictionaryID]
|
||||
if !ok {
|
||||
return nil, ErrUnknownDictionary
|
||||
}
|
||||
frame.history.setDict(&dict)
|
||||
}
|
||||
if err != nil {
|
||||
return dst, err
|
||||
}
|
||||
|
|
@ -456,10 +474,19 @@ func (d *Decoder) startStreamDecoder(inStream chan decodeStream) {
|
|||
br := readerWrapper{r: stream.r}
|
||||
decodeStream:
|
||||
for {
|
||||
frame.history.reset()
|
||||
err := frame.reset(&br)
|
||||
if debug && err != nil {
|
||||
println("Frame decoder returned", err)
|
||||
}
|
||||
if err == nil && frame.DictionaryID != nil {
|
||||
dict, ok := d.dicts[*frame.DictionaryID]
|
||||
if !ok {
|
||||
err = ErrUnknownDictionary
|
||||
} else {
|
||||
frame.history.setDict(&dict)
|
||||
}
|
||||
}
|
||||
if err != nil {
|
||||
stream.output <- decodeOutput{
|
||||
err: err,
|
||||
|
|
|
|||
|
|
@ -18,6 +18,7 @@ type decoderOptions struct {
|
|||
lowMem bool
|
||||
concurrent int
|
||||
maxDecodedSize uint64
|
||||
dicts []dict
|
||||
}
|
||||
|
||||
func (o *decoderOptions) setDefault() {
|
||||
|
|
@ -66,3 +67,18 @@ func WithDecoderMaxMemory(n uint64) DOption {
|
|||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithDecoderDicts allows to register one or more dictionaries for the decoder.
|
||||
// If several dictionaries with the same ID is provided the last one will be used.
|
||||
func WithDecoderDicts(dicts ...[]byte) DOption {
|
||||
return func(o *decoderOptions) error {
|
||||
for _, b := range dicts {
|
||||
d, err := loadDict(b)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
o.dicts = append(o.dicts, *d)
|
||||
}
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -0,0 +1,104 @@
|
|||
package zstd
|
||||
|
||||
import (
|
||||
"bytes"
|
||||
"encoding/binary"
|
||||
"errors"
|
||||
"fmt"
|
||||
"io"
|
||||
|
||||
"github.com/klauspost/compress/huff0"
|
||||
)
|
||||
|
||||
type dict struct {
|
||||
id uint32
|
||||
|
||||
litDec *huff0.Scratch
|
||||
llDec, ofDec, mlDec sequenceDec
|
||||
offsets [3]int
|
||||
content []byte
|
||||
}
|
||||
|
||||
var dictMagic = [4]byte{0x37, 0xa4, 0x30, 0xec}
|
||||
|
||||
// Load a dictionary as described in
|
||||
// https://github.com/facebook/zstd/blob/master/doc/zstd_compression_format.md#dictionary-format
|
||||
func loadDict(b []byte) (*dict, error) {
|
||||
// Check static field size.
|
||||
if len(b) <= 8+(3*4) {
|
||||
return nil, io.ErrUnexpectedEOF
|
||||
}
|
||||
d := dict{
|
||||
llDec: sequenceDec{fse: &fseDecoder{}},
|
||||
ofDec: sequenceDec{fse: &fseDecoder{}},
|
||||
mlDec: sequenceDec{fse: &fseDecoder{}},
|
||||
}
|
||||
if !bytes.Equal(b[:4], dictMagic[:]) {
|
||||
return nil, ErrMagicMismatch
|
||||
}
|
||||
d.id = binary.LittleEndian.Uint32(b[4:8])
|
||||
if d.id == 0 {
|
||||
return nil, errors.New("dictionaries cannot have ID 0")
|
||||
}
|
||||
|
||||
// Read literal table
|
||||
var err error
|
||||
d.litDec, b, err = huff0.ReadTable(b[8:], nil)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
br := byteReader{
|
||||
b: b,
|
||||
off: 0,
|
||||
}
|
||||
readDec := func(i tableIndex, dec *fseDecoder) error {
|
||||
if err := dec.readNCount(&br, uint16(maxTableSymbol[i])); err != nil {
|
||||
return err
|
||||
}
|
||||
if br.overread() {
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
err = dec.transform(symbolTableX[i])
|
||||
if err != nil {
|
||||
println("Transform table error:", err)
|
||||
return err
|
||||
}
|
||||
if debug {
|
||||
println("Read table ok", "symbolLen:", dec.symbolLen)
|
||||
}
|
||||
// Set decoders as predefined so they aren't reused.
|
||||
dec.preDefined = true
|
||||
return nil
|
||||
}
|
||||
|
||||
if err := readDec(tableOffsets, d.ofDec.fse); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := readDec(tableMatchLengths, d.mlDec.fse); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if err := readDec(tableLiteralLengths, d.llDec.fse); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if br.remain() < 12 {
|
||||
return nil, io.ErrUnexpectedEOF
|
||||
}
|
||||
|
||||
d.offsets[0] = int(br.Uint32())
|
||||
br.advance(4)
|
||||
d.offsets[1] = int(br.Uint32())
|
||||
br.advance(4)
|
||||
d.offsets[2] = int(br.Uint32())
|
||||
br.advance(4)
|
||||
if d.offsets[0] <= 0 || d.offsets[1] <= 0 || d.offsets[2] <= 0 {
|
||||
return nil, errors.New("invalid offset in dictionary")
|
||||
}
|
||||
d.content = make([]byte, br.remain())
|
||||
copy(d.content, br.unread())
|
||||
if d.offsets[0] > len(d.content) || d.offsets[1] > len(d.content) || d.offsets[2] > len(d.content) {
|
||||
return nil, fmt.Errorf("initial offset bigger than dictionary content size %d, offsets: %v", len(d.content), d.offsets)
|
||||
}
|
||||
|
||||
return &d, nil
|
||||
}
|
||||
|
|
@ -0,0 +1,518 @@
|
|||
// Copyright 2019+ Klaus Post. All rights reserved.
|
||||
// License information can be found in the LICENSE file.
|
||||
// Based on work by Yann Collet, released under BSD License.
|
||||
|
||||
package zstd
|
||||
|
||||
import "fmt"
|
||||
|
||||
const (
|
||||
betterLongTableBits = 19 // Bits used in the long match table
|
||||
betterLongTableSize = 1 << betterLongTableBits // Size of the table
|
||||
|
||||
// Note: Increasing the short table bits or making the hash shorter
|
||||
// can actually lead to compression degradation since it will 'steal' more from the
|
||||
// long match table and match offsets are quite big.
|
||||
// This greatly depends on the type of input.
|
||||
betterShortTableBits = 13 // Bits used in the short match table
|
||||
betterShortTableSize = 1 << betterShortTableBits // Size of the table
|
||||
)
|
||||
|
||||
type prevEntry struct {
|
||||
offset int32
|
||||
prev int32
|
||||
}
|
||||
|
||||
// betterFastEncoder uses 2 tables, one for short matches (5 bytes) and one for long matches.
|
||||
// The long match table contains the previous entry with the same hash,
|
||||
// effectively making it a "chain" of length 2.
|
||||
// When we find a long match we choose between the two values and select the longest.
|
||||
// When we find a short match, after checking the long, we check if we can find a long at n+1
|
||||
// and that it is longer (lazy matching).
|
||||
type betterFastEncoder struct {
|
||||
fastBase
|
||||
table [betterShortTableSize]tableEntry
|
||||
longTable [betterLongTableSize]prevEntry
|
||||
}
|
||||
|
||||
// Encode improves compression...
|
||||
func (e *betterFastEncoder) Encode(blk *blockEnc, src []byte) {
|
||||
const (
|
||||
// Input margin is the number of bytes we read (8)
|
||||
// and the maximum we will read ahead (2)
|
||||
inputMargin = 8 + 2
|
||||
minNonLiteralBlockSize = 16
|
||||
)
|
||||
|
||||
// Protect against e.cur wraparound.
|
||||
for e.cur >= bufferReset {
|
||||
if len(e.hist) == 0 {
|
||||
for i := range e.table[:] {
|
||||
e.table[i] = tableEntry{}
|
||||
}
|
||||
for i := range e.longTable[:] {
|
||||
e.longTable[i] = prevEntry{}
|
||||
}
|
||||
e.cur = e.maxMatchOff
|
||||
break
|
||||
}
|
||||
// Shift down everything in the table that isn't already too far away.
|
||||
minOff := e.cur + int32(len(e.hist)) - e.maxMatchOff
|
||||
for i := range e.table[:] {
|
||||
v := e.table[i].offset
|
||||
if v < minOff {
|
||||
v = 0
|
||||
} else {
|
||||
v = v - e.cur + e.maxMatchOff
|
||||
}
|
||||
e.table[i].offset = v
|
||||
}
|
||||
for i := range e.longTable[:] {
|
||||
v := e.longTable[i].offset
|
||||
v2 := e.longTable[i].prev
|
||||
if v < minOff {
|
||||
v = 0
|
||||
v2 = 0
|
||||
} else {
|
||||
v = v - e.cur + e.maxMatchOff
|
||||
if v2 < minOff {
|
||||
v2 = 0
|
||||
} else {
|
||||
v2 = v2 - e.cur + e.maxMatchOff
|
||||
}
|
||||
}
|
||||
e.longTable[i] = prevEntry{
|
||||
offset: v,
|
||||
prev: v2,
|
||||
}
|
||||
}
|
||||
e.cur = e.maxMatchOff
|
||||
break
|
||||
}
|
||||
|
||||
s := e.addBlock(src)
|
||||
blk.size = len(src)
|
||||
if len(src) < minNonLiteralBlockSize {
|
||||
blk.extraLits = len(src)
|
||||
blk.literals = blk.literals[:len(src)]
|
||||
copy(blk.literals, src)
|
||||
return
|
||||
}
|
||||
|
||||
// Override src
|
||||
src = e.hist
|
||||
sLimit := int32(len(src)) - inputMargin
|
||||
// stepSize is the number of bytes to skip on every main loop iteration.
|
||||
// It should be >= 1.
|
||||
const stepSize = 1
|
||||
|
||||
const kSearchStrength = 9
|
||||
|
||||
// nextEmit is where in src the next emitLiteral should start from.
|
||||
nextEmit := s
|
||||
cv := load6432(src, s)
|
||||
|
||||
// Relative offsets
|
||||
offset1 := int32(blk.recentOffsets[0])
|
||||
offset2 := int32(blk.recentOffsets[1])
|
||||
|
||||
addLiterals := func(s *seq, until int32) {
|
||||
if until == nextEmit {
|
||||
return
|
||||
}
|
||||
blk.literals = append(blk.literals, src[nextEmit:until]...)
|
||||
s.litLen = uint32(until - nextEmit)
|
||||
}
|
||||
if debug {
|
||||
println("recent offsets:", blk.recentOffsets)
|
||||
}
|
||||
|
||||
encodeLoop:
|
||||
for {
|
||||
var t int32
|
||||
// We allow the encoder to optionally turn off repeat offsets across blocks
|
||||
canRepeat := len(blk.sequences) > 2
|
||||
var matched int32
|
||||
|
||||
for {
|
||||
if debugAsserts && canRepeat && offset1 == 0 {
|
||||
panic("offset0 was 0")
|
||||
}
|
||||
|
||||
nextHashS := hash5(cv, betterShortTableBits)
|
||||
nextHashL := hash8(cv, betterLongTableBits)
|
||||
candidateL := e.longTable[nextHashL]
|
||||
candidateS := e.table[nextHashS]
|
||||
|
||||
const repOff = 1
|
||||
repIndex := s - offset1 + repOff
|
||||
off := s + e.cur
|
||||
e.longTable[nextHashL] = prevEntry{offset: off, prev: candidateL.offset}
|
||||
e.table[nextHashS] = tableEntry{offset: off, val: uint32(cv)}
|
||||
|
||||
if canRepeat {
|
||||
if repIndex >= 0 && load3232(src, repIndex) == uint32(cv>>(repOff*8)) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
lenght := 4 + e.matchlen(s+4+repOff, repIndex+4, src)
|
||||
|
||||
seq.matchLen = uint32(lenght - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
start := s + repOff
|
||||
// We end the search early, so we don't risk 0 literals
|
||||
// and have to do special offset treatment.
|
||||
startLimit := nextEmit + 1
|
||||
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] && seq.matchLen < maxMatchLength-zstdMinMatch-1 {
|
||||
repIndex--
|
||||
start--
|
||||
seq.matchLen++
|
||||
}
|
||||
addLiterals(&seq, start)
|
||||
|
||||
// rep 0
|
||||
seq.offset = 1
|
||||
if debugSequences {
|
||||
println("repeat sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
|
||||
// Index match start+1 (long) -> s - 1
|
||||
index0 := s + repOff
|
||||
s += lenght + repOff
|
||||
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, lenght)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
}
|
||||
// Index skipped...
|
||||
for index0 < s-1 {
|
||||
cv0 := load6432(src, index0)
|
||||
cv1 := cv0 >> 8
|
||||
h0 := hash8(cv0, betterLongTableBits)
|
||||
off := index0 + e.cur
|
||||
e.longTable[h0] = prevEntry{offset: off, prev: e.longTable[h0].offset}
|
||||
e.table[hash5(cv1, betterShortTableBits)] = tableEntry{offset: off + 1, val: uint32(cv1)}
|
||||
index0 += 2
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
continue
|
||||
}
|
||||
const repOff2 = 1
|
||||
|
||||
// We deviate from the reference encoder and also check offset 2.
|
||||
// Still slower and not much better, so disabled.
|
||||
// repIndex = s - offset2 + repOff2
|
||||
if false && repIndex >= 0 && load6432(src, repIndex) == load6432(src, s+repOff) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
lenght := 8 + e.matchlen(s+8+repOff2, repIndex+8, src)
|
||||
|
||||
seq.matchLen = uint32(lenght - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
start := s + repOff2
|
||||
// We end the search early, so we don't risk 0 literals
|
||||
// and have to do special offset treatment.
|
||||
startLimit := nextEmit + 1
|
||||
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] && seq.matchLen < maxMatchLength-zstdMinMatch-1 {
|
||||
repIndex--
|
||||
start--
|
||||
seq.matchLen++
|
||||
}
|
||||
addLiterals(&seq, start)
|
||||
|
||||
// rep 2
|
||||
seq.offset = 2
|
||||
if debugSequences {
|
||||
println("repeat sequence 2", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
|
||||
index0 := s + repOff2
|
||||
s += lenght + repOff2
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, lenght)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
}
|
||||
|
||||
// Index skipped...
|
||||
for index0 < s-1 {
|
||||
cv0 := load6432(src, index0)
|
||||
cv1 := cv0 >> 8
|
||||
h0 := hash8(cv0, betterLongTableBits)
|
||||
off := index0 + e.cur
|
||||
e.longTable[h0] = prevEntry{offset: off, prev: e.longTable[h0].offset}
|
||||
e.table[hash5(cv1, betterShortTableBits)] = tableEntry{offset: off + 1, val: uint32(cv1)}
|
||||
index0 += 2
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
// Swap offsets
|
||||
offset1, offset2 = offset2, offset1
|
||||
continue
|
||||
}
|
||||
}
|
||||
// Find the offsets of our two matches.
|
||||
coffsetL := candidateL.offset - e.cur
|
||||
coffsetLP := candidateL.prev - e.cur
|
||||
|
||||
// Check if we have a long match.
|
||||
if s-coffsetL < e.maxMatchOff && cv == load6432(src, coffsetL) {
|
||||
// Found a long match, at least 8 bytes.
|
||||
matched = e.matchlen(s+8, coffsetL+8, src) + 8
|
||||
t = coffsetL
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugMatches {
|
||||
println("long match")
|
||||
}
|
||||
|
||||
if s-coffsetLP < e.maxMatchOff && cv == load6432(src, coffsetLP) {
|
||||
// Found a long match, at least 8 bytes.
|
||||
prevMatch := e.matchlen(s+8, coffsetLP+8, src) + 8
|
||||
if prevMatch > matched {
|
||||
matched = prevMatch
|
||||
t = coffsetLP
|
||||
}
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugMatches {
|
||||
println("long match")
|
||||
}
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
// Check if we have a long match on prev.
|
||||
if s-coffsetLP < e.maxMatchOff && cv == load6432(src, coffsetLP) {
|
||||
// Found a long match, at least 8 bytes.
|
||||
matched = e.matchlen(s+8, coffsetLP+8, src) + 8
|
||||
t = coffsetLP
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugMatches {
|
||||
println("long match")
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
coffsetS := candidateS.offset - e.cur
|
||||
|
||||
// Check if we have a short match.
|
||||
if s-coffsetS < e.maxMatchOff && uint32(cv) == candidateS.val {
|
||||
// found a regular match
|
||||
matched = e.matchlen(s+4, coffsetS+4, src) + 4
|
||||
|
||||
// See if we can find a long match at s+1
|
||||
const checkAt = 1
|
||||
cv := load6432(src, s+checkAt)
|
||||
nextHashL = hash8(cv, betterLongTableBits)
|
||||
candidateL = e.longTable[nextHashL]
|
||||
coffsetL = candidateL.offset - e.cur
|
||||
|
||||
// We can store it, since we have at least a 4 byte match.
|
||||
e.longTable[nextHashL] = prevEntry{offset: s + checkAt + e.cur, prev: candidateL.offset}
|
||||
if s-coffsetL < e.maxMatchOff && cv == load6432(src, coffsetL) {
|
||||
// Found a long match, at least 8 bytes.
|
||||
matchedNext := e.matchlen(s+8+checkAt, coffsetL+8, src) + 8
|
||||
if matchedNext > matched {
|
||||
t = coffsetL
|
||||
s += checkAt
|
||||
matched = matchedNext
|
||||
if debugMatches {
|
||||
println("long match (after short)")
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
|
||||
// Check prev long...
|
||||
coffsetL = candidateL.prev - e.cur
|
||||
if s-coffsetL < e.maxMatchOff && cv == load6432(src, coffsetL) {
|
||||
// Found a long match, at least 8 bytes.
|
||||
matchedNext := e.matchlen(s+8+checkAt, coffsetL+8, src) + 8
|
||||
if matchedNext > matched {
|
||||
t = coffsetL
|
||||
s += checkAt
|
||||
matched = matchedNext
|
||||
if debugMatches {
|
||||
println("prev long match (after short)")
|
||||
}
|
||||
break
|
||||
}
|
||||
}
|
||||
t = coffsetS
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugAsserts && t < 0 {
|
||||
panic("t<0")
|
||||
}
|
||||
if debugMatches {
|
||||
println("short match")
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
// No match found, move forward in input.
|
||||
s += stepSize + ((s - nextEmit) >> (kSearchStrength - 1))
|
||||
if s >= sLimit {
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
}
|
||||
|
||||
// A 4-byte match has been found. Update recent offsets.
|
||||
// We'll later see if more than 4 bytes.
|
||||
offset2 = offset1
|
||||
offset1 = s - t
|
||||
|
||||
if debugAsserts && s <= t {
|
||||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
|
||||
if debugAsserts && canRepeat && int(offset1) > len(src) {
|
||||
panic("invalid offset")
|
||||
}
|
||||
|
||||
// Extend the n-byte match as long as possible.
|
||||
l := matched
|
||||
|
||||
// Extend backwards
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for t > tMin && s > nextEmit && src[t-1] == src[s-1] && l < maxMatchLength {
|
||||
s--
|
||||
t--
|
||||
l++
|
||||
}
|
||||
|
||||
// Write our sequence
|
||||
var seq seq
|
||||
seq.litLen = uint32(s - nextEmit)
|
||||
seq.matchLen = uint32(l - zstdMinMatch)
|
||||
if seq.litLen > 0 {
|
||||
blk.literals = append(blk.literals, src[nextEmit:s]...)
|
||||
}
|
||||
seq.offset = uint32(s-t) + 3
|
||||
s += l
|
||||
if debugSequences {
|
||||
println("sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
break encodeLoop
|
||||
}
|
||||
|
||||
// Index match start+1 (long) -> s - 1
|
||||
index0 := s - l + 1
|
||||
for index0 < s-1 {
|
||||
cv0 := load6432(src, index0)
|
||||
cv1 := cv0 >> 8
|
||||
h0 := hash8(cv0, betterLongTableBits)
|
||||
off := index0 + e.cur
|
||||
e.longTable[h0] = prevEntry{offset: off, prev: e.longTable[h0].offset}
|
||||
e.table[hash5(cv1, betterShortTableBits)] = tableEntry{offset: off + 1, val: uint32(cv1)}
|
||||
index0 += 2
|
||||
}
|
||||
|
||||
cv = load6432(src, s)
|
||||
if !canRepeat {
|
||||
continue
|
||||
}
|
||||
|
||||
// Check offset 2
|
||||
for {
|
||||
o2 := s - offset2
|
||||
if load3232(src, o2) != uint32(cv) {
|
||||
// Do regular search
|
||||
break
|
||||
}
|
||||
|
||||
// Store this, since we have it.
|
||||
nextHashS := hash5(cv, betterShortTableBits)
|
||||
nextHashL := hash8(cv, betterLongTableBits)
|
||||
|
||||
// We have at least 4 byte match.
|
||||
// No need to check backwards. We come straight from a match
|
||||
l := 4 + e.matchlen(s+4, o2+4, src)
|
||||
|
||||
e.longTable[nextHashL] = prevEntry{offset: s + e.cur, prev: e.longTable[nextHashL].offset}
|
||||
e.table[nextHashS] = tableEntry{offset: s + e.cur, val: uint32(cv)}
|
||||
seq.matchLen = uint32(l) - zstdMinMatch
|
||||
seq.litLen = 0
|
||||
|
||||
// Since litlen is always 0, this is offset 1.
|
||||
seq.offset = 1
|
||||
s += l
|
||||
nextEmit = s
|
||||
if debugSequences {
|
||||
println("sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
|
||||
// Swap offset 1 and 2.
|
||||
offset1, offset2 = offset2, offset1
|
||||
if s >= sLimit {
|
||||
// Finished
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
}
|
||||
}
|
||||
|
||||
if int(nextEmit) < len(src) {
|
||||
blk.literals = append(blk.literals, src[nextEmit:]...)
|
||||
blk.extraLits = len(src) - int(nextEmit)
|
||||
}
|
||||
blk.recentOffsets[0] = uint32(offset1)
|
||||
blk.recentOffsets[1] = uint32(offset2)
|
||||
if debug {
|
||||
println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
|
||||
}
|
||||
}
|
||||
|
||||
// EncodeNoHist will encode a block with no history and no following blocks.
|
||||
// Most notable difference is that src will not be copied for history and
|
||||
// we do not need to check for max match length.
|
||||
func (e *betterFastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
|
||||
e.Encode(blk, src)
|
||||
}
|
||||
|
|
@ -80,10 +80,7 @@ func (e *doubleFastEncoder) Encode(blk *blockEnc, src []byte) {
|
|||
sLimit := int32(len(src)) - inputMargin
|
||||
// stepSize is the number of bytes to skip on every main loop iteration.
|
||||
// It should be >= 1.
|
||||
stepSize := int32(e.o.targetLength)
|
||||
if stepSize == 0 {
|
||||
stepSize++
|
||||
}
|
||||
const stepSize = 1
|
||||
|
||||
const kSearchStrength = 8
|
||||
|
||||
|
|
@ -172,55 +169,6 @@ encodeLoop:
|
|||
cv = load6432(src, s)
|
||||
continue
|
||||
}
|
||||
const repOff2 = 1
|
||||
// We deviate from the reference encoder and also check offset 2.
|
||||
// Slower and not consistently better, so disabled.
|
||||
// repIndex = s - offset2 + repOff2
|
||||
if false && repIndex >= 0 && load3232(src, repIndex) == uint32(cv>>(repOff2*8)) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
lenght := 4 + e.matchlen(s+4+repOff2, repIndex+4, src)
|
||||
|
||||
seq.matchLen = uint32(lenght - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
start := s + repOff2
|
||||
// We end the search early, so we don't risk 0 literals
|
||||
// and have to do special offset treatment.
|
||||
startLimit := nextEmit + 1
|
||||
|
||||
tMin := s - e.maxMatchOff
|
||||
if tMin < 0 {
|
||||
tMin = 0
|
||||
}
|
||||
for repIndex > tMin && start > startLimit && src[repIndex-1] == src[start-1] && seq.matchLen < maxMatchLength-zstdMinMatch-1 {
|
||||
repIndex--
|
||||
start--
|
||||
seq.matchLen++
|
||||
}
|
||||
addLiterals(&seq, start)
|
||||
|
||||
// rep 2
|
||||
seq.offset = 2
|
||||
if debugSequences {
|
||||
println("repeat sequence 2", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
s += lenght + repOff2
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, lenght)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
}
|
||||
cv = load6432(src, s)
|
||||
// Swap offsets
|
||||
offset1, offset2 = offset2, offset1
|
||||
continue
|
||||
}
|
||||
}
|
||||
// Find the offsets of our two matches.
|
||||
coffsetL := s - (candidateL.offset - e.cur)
|
||||
|
|
@ -372,7 +320,7 @@ encodeLoop:
|
|||
}
|
||||
|
||||
// Store this, since we have it.
|
||||
nextHashS := hash5(cv1>>8, dFastShortTableBits)
|
||||
nextHashS := hash5(cv, dFastShortTableBits)
|
||||
nextHashL := hash8(cv, dFastLongTableBits)
|
||||
|
||||
// We have at least 4 byte match.
|
||||
|
|
@ -450,10 +398,7 @@ func (e *doubleFastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
|
|||
sLimit := int32(len(src)) - inputMargin
|
||||
// stepSize is the number of bytes to skip on every main loop iteration.
|
||||
// It should be >= 1.
|
||||
stepSize := int32(e.o.targetLength)
|
||||
if stepSize == 0 {
|
||||
stepSize++
|
||||
}
|
||||
const stepSize = 1
|
||||
|
||||
const kSearchStrength = 8
|
||||
|
||||
|
|
@ -726,4 +671,8 @@ encodeLoop:
|
|||
println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
|
||||
}
|
||||
|
||||
// We do not store history, so we must offset e.cur to avoid false matches for next user.
|
||||
if e.cur < bufferReset {
|
||||
e.cur += int32(len(src))
|
||||
}
|
||||
}
|
||||
|
|
|
|||
|
|
@ -6,6 +6,7 @@ package zstd
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"math"
|
||||
"math/bits"
|
||||
|
||||
"github.com/klauspost/compress/zstd/internal/xxhash"
|
||||
|
|
@ -23,26 +24,29 @@ type tableEntry struct {
|
|||
offset int32
|
||||
}
|
||||
|
||||
type fastEncoder struct {
|
||||
o encParams
|
||||
type fastBase struct {
|
||||
// cur is the offset at the start of hist
|
||||
cur int32
|
||||
// maximum offset. Should be at least 2x block size.
|
||||
maxMatchOff int32
|
||||
hist []byte
|
||||
crc *xxhash.Digest
|
||||
table [tableSize]tableEntry
|
||||
tmp [8]byte
|
||||
blk *blockEnc
|
||||
}
|
||||
|
||||
type fastEncoder struct {
|
||||
fastBase
|
||||
table [tableSize]tableEntry
|
||||
}
|
||||
|
||||
// CRC returns the underlying CRC writer.
|
||||
func (e *fastEncoder) CRC() *xxhash.Digest {
|
||||
func (e *fastBase) CRC() *xxhash.Digest {
|
||||
return e.crc
|
||||
}
|
||||
|
||||
// AppendCRC will append the CRC to the destination slice and return it.
|
||||
func (e *fastEncoder) AppendCRC(dst []byte) []byte {
|
||||
func (e *fastBase) AppendCRC(dst []byte) []byte {
|
||||
crc := e.crc.Sum(e.tmp[:0])
|
||||
dst = append(dst, crc[7], crc[6], crc[5], crc[4])
|
||||
return dst
|
||||
|
|
@ -50,7 +54,7 @@ func (e *fastEncoder) AppendCRC(dst []byte) []byte {
|
|||
|
||||
// WindowSize returns the window size of the encoder,
|
||||
// or a window size small enough to contain the input size, if > 0.
|
||||
func (e *fastEncoder) WindowSize(size int) int32 {
|
||||
func (e *fastBase) WindowSize(size int) int32 {
|
||||
if size > 0 && size < int(e.maxMatchOff) {
|
||||
b := int32(1) << uint(bits.Len(uint(size)))
|
||||
// Keep minimum window.
|
||||
|
|
@ -63,7 +67,7 @@ func (e *fastEncoder) WindowSize(size int) int32 {
|
|||
}
|
||||
|
||||
// Block returns the current block.
|
||||
func (e *fastEncoder) Block() *blockEnc {
|
||||
func (e *fastBase) Block() *blockEnc {
|
||||
return e.blk
|
||||
}
|
||||
|
||||
|
|
@ -112,11 +116,7 @@ func (e *fastEncoder) Encode(blk *blockEnc, src []byte) {
|
|||
sLimit := int32(len(src)) - inputMargin
|
||||
// stepSize is the number of bytes to skip on every main loop iteration.
|
||||
// It should be >= 2.
|
||||
stepSize := int32(e.o.targetLength)
|
||||
if stepSize == 0 {
|
||||
stepSize++
|
||||
}
|
||||
stepSize++
|
||||
const stepSize = 2
|
||||
|
||||
// TEMPLATE
|
||||
const hashLog = tableBits
|
||||
|
|
@ -169,9 +169,22 @@ encodeLoop:
|
|||
if canRepeat && repIndex >= 0 && load3232(src, repIndex) == uint32(cv>>16) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
lenght := 4 + e.matchlen(s+6, repIndex+4, src)
|
||||
var length int32
|
||||
// length = 4 + e.matchlen(s+6, repIndex+4, src)
|
||||
{
|
||||
a := src[s+6:]
|
||||
b := src[repIndex+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
length = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
length = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
seq.matchLen = uint32(lenght - zstdMinMatch)
|
||||
seq.matchLen = uint32(length - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
|
|
@ -197,11 +210,11 @@ encodeLoop:
|
|||
println("repeat sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
s += lenght + 2
|
||||
s += length + 2
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, lenght)
|
||||
println("repeat ended", s, length)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
|
|
@ -257,7 +270,20 @@ encodeLoop:
|
|||
}
|
||||
|
||||
// Extend the 4-byte match as long as possible.
|
||||
l := e.matchlen(s+4, t+4, src) + 4
|
||||
//l := e.matchlen(s+4, t+4, src) + 4
|
||||
var l int32
|
||||
{
|
||||
a := src[s+4:]
|
||||
b := src[t+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
l = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
l = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Extend backwards
|
||||
tMin := s - e.maxMatchOff
|
||||
|
|
@ -294,7 +320,20 @@ encodeLoop:
|
|||
if o2 := s - offset2; canRepeat && load3232(src, o2) == uint32(cv) {
|
||||
// We have at least 4 byte match.
|
||||
// No need to check backwards. We come straight from a match
|
||||
l := 4 + e.matchlen(s+4, o2+4, src)
|
||||
//l := 4 + e.matchlen(s+4, o2+4, src)
|
||||
var l int32
|
||||
{
|
||||
a := src[s+4:]
|
||||
b := src[o2+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
l = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
l = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Store this, since we have it.
|
||||
nextHash := hash6(cv, hashLog)
|
||||
|
|
@ -344,6 +383,7 @@ func (e *fastEncoder) EncodeNoHist(blk *blockEnc, src []byte) {
|
|||
panic("src too big")
|
||||
}
|
||||
}
|
||||
|
||||
// Protect against e.cur wraparound.
|
||||
if e.cur >= bufferReset {
|
||||
for i := range e.table[:] {
|
||||
|
|
@ -412,10 +452,23 @@ encodeLoop:
|
|||
if len(blk.sequences) > 2 && load3232(src, repIndex) == uint32(cv>>16) {
|
||||
// Consider history as well.
|
||||
var seq seq
|
||||
// lenght := 4 + e.matchlen(s+6, repIndex+4, src)
|
||||
lenght := 4 + int32(matchLen(src[s+6:], src[repIndex+4:]))
|
||||
// length := 4 + e.matchlen(s+6, repIndex+4, src)
|
||||
// length := 4 + int32(matchLen(src[s+6:], src[repIndex+4:]))
|
||||
var length int32
|
||||
{
|
||||
a := src[s+6:]
|
||||
b := src[repIndex+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
length = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
length = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
seq.matchLen = uint32(lenght - zstdMinMatch)
|
||||
seq.matchLen = uint32(length - zstdMinMatch)
|
||||
|
||||
// We might be able to match backwards.
|
||||
// Extend as long as we can.
|
||||
|
|
@ -441,11 +494,11 @@ encodeLoop:
|
|||
println("repeat sequence", seq, "next s:", s)
|
||||
}
|
||||
blk.sequences = append(blk.sequences, seq)
|
||||
s += lenght + 2
|
||||
s += length + 2
|
||||
nextEmit = s
|
||||
if s >= sLimit {
|
||||
if debug {
|
||||
println("repeat ended", s, lenght)
|
||||
println("repeat ended", s, length)
|
||||
|
||||
}
|
||||
break encodeLoop
|
||||
|
|
@ -464,6 +517,9 @@ encodeLoop:
|
|||
if debugAsserts && s-t > e.maxMatchOff {
|
||||
panic("s - t >e.maxMatchOff")
|
||||
}
|
||||
if debugAsserts && t < 0 {
|
||||
panic(fmt.Sprintf("t (%d) < 0, candidate.offset: %d, e.cur: %d, coffset0: %d, e.maxMatchOff: %d", t, candidate.offset, e.cur, coffset0, e.maxMatchOff))
|
||||
}
|
||||
break
|
||||
}
|
||||
|
||||
|
|
@ -496,9 +552,25 @@ encodeLoop:
|
|||
panic(fmt.Sprintf("s (%d) <= t (%d)", s, t))
|
||||
}
|
||||
|
||||
if debugAsserts && t < 0 {
|
||||
panic(fmt.Sprintf("t (%d) < 0 ", t))
|
||||
}
|
||||
// Extend the 4-byte match as long as possible.
|
||||
//l := e.matchlenNoHist(s+4, t+4, src) + 4
|
||||
l := int32(matchLen(src[s+4:], src[t+4:])) + 4
|
||||
// l := int32(matchLen(src[s+4:], src[t+4:])) + 4
|
||||
var l int32
|
||||
{
|
||||
a := src[s+4:]
|
||||
b := src[t+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
l = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
l = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Extend backwards
|
||||
tMin := s - e.maxMatchOff
|
||||
|
|
@ -536,7 +608,20 @@ encodeLoop:
|
|||
// We have at least 4 byte match.
|
||||
// No need to check backwards. We come straight from a match
|
||||
//l := 4 + e.matchlenNoHist(s+4, o2+4, src)
|
||||
l := 4 + int32(matchLen(src[s+4:], src[o2+4:]))
|
||||
// l := 4 + int32(matchLen(src[s+4:], src[o2+4:]))
|
||||
var l int32
|
||||
{
|
||||
a := src[s+4:]
|
||||
b := src[o2+4:]
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
l = int32(endI) + 4
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
l = int32(i+bits.TrailingZeros64(diff)>>3) + 4
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Store this, since we have it.
|
||||
nextHash := hash6(cv, hashLog)
|
||||
|
|
@ -569,9 +654,13 @@ encodeLoop:
|
|||
if debug {
|
||||
println("returning, recent offsets:", blk.recentOffsets, "extra literals:", blk.extraLits)
|
||||
}
|
||||
// We do not store history, so we must offset e.cur to avoid false matches for next user.
|
||||
if e.cur < bufferReset {
|
||||
e.cur += int32(len(src))
|
||||
}
|
||||
}
|
||||
|
||||
func (e *fastEncoder) addBlock(src []byte) int32 {
|
||||
func (e *fastBase) addBlock(src []byte) int32 {
|
||||
if debugAsserts && e.cur > bufferReset {
|
||||
panic(fmt.Sprintf("ecur (%d) > buffer reset (%d)", e.cur, bufferReset))
|
||||
}
|
||||
|
|
@ -602,17 +691,17 @@ func (e *fastEncoder) addBlock(src []byte) int32 {
|
|||
|
||||
// useBlock will replace the block with the provided one,
|
||||
// but transfer recent offsets from the previous.
|
||||
func (e *fastEncoder) UseBlock(enc *blockEnc) {
|
||||
func (e *fastBase) UseBlock(enc *blockEnc) {
|
||||
enc.reset(e.blk)
|
||||
e.blk = enc
|
||||
}
|
||||
|
||||
func (e *fastEncoder) matchlenNoHist(s, t int32, src []byte) int32 {
|
||||
func (e *fastBase) matchlenNoHist(s, t int32, src []byte) int32 {
|
||||
// Extend the match to be as long as possible.
|
||||
return int32(matchLen(src[s:], src[t:]))
|
||||
}
|
||||
|
||||
func (e *fastEncoder) matchlen(s, t int32, src []byte) int32 {
|
||||
func (e *fastBase) matchlen(s, t int32, src []byte) int32 {
|
||||
if debugAsserts {
|
||||
if s < 0 {
|
||||
err := fmt.Sprintf("s (%d) < 0", s)
|
||||
|
|
@ -626,18 +715,17 @@ func (e *fastEncoder) matchlen(s, t int32, src []byte) int32 {
|
|||
err := fmt.Sprintf("s (%d) - t (%d) > maxMatchOff (%d)", s, t, e.maxMatchOff)
|
||||
panic(err)
|
||||
}
|
||||
if len(src)-int(s) > maxCompressedBlockSize {
|
||||
panic(fmt.Sprintf("len(src)-s (%d) > maxCompressedBlockSize (%d)", len(src)-int(s), maxCompressedBlockSize))
|
||||
}
|
||||
s1 := int(s) + maxMatchLength - 4
|
||||
if s1 > len(src) {
|
||||
s1 = len(src)
|
||||
}
|
||||
|
||||
// Extend the match to be as long as possible.
|
||||
return int32(matchLen(src[s:s1], src[t:]))
|
||||
return int32(matchLen(src[s:], src[t:]))
|
||||
}
|
||||
|
||||
// Reset the encoding table.
|
||||
func (e *fastEncoder) Reset() {
|
||||
func (e *fastBase) Reset(singleBlock bool) {
|
||||
if e.blk == nil {
|
||||
e.blk = &blockEnc{}
|
||||
e.blk.init()
|
||||
|
|
@ -650,7 +738,7 @@ func (e *fastEncoder) Reset() {
|
|||
} else {
|
||||
e.crc.Reset()
|
||||
}
|
||||
if cap(e.hist) < int(e.maxMatchOff*2) {
|
||||
if !singleBlock && cap(e.hist) < int(e.maxMatchOff*2) {
|
||||
l := e.maxMatchOff * 2
|
||||
// Make it at least 1MB.
|
||||
if l < 1<<20 {
|
||||
|
|
|
|||
|
|
@ -4,6 +4,8 @@
|
|||
|
||||
package zstd
|
||||
|
||||
/*
|
||||
// encParams are not really used, just here for reference.
|
||||
type encParams struct {
|
||||
// largest match distance : larger == more compression, more memory needed during decompression
|
||||
windowLog uint8
|
||||
|
|
@ -152,3 +154,4 @@ var defEncParams = [4][]encParams{
|
|||
{14, 15, 15, 10, 3, 999, strategyBtultra2}, // level 22.
|
||||
},
|
||||
}
|
||||
*/
|
||||
|
|
|
|||
|
|
@ -35,7 +35,7 @@ type encoder interface {
|
|||
AppendCRC([]byte) []byte
|
||||
WindowSize(size int) int32
|
||||
UseBlock(*blockEnc)
|
||||
Reset()
|
||||
Reset(singleBlock bool)
|
||||
}
|
||||
|
||||
type encoderState struct {
|
||||
|
|
@ -50,6 +50,7 @@ type encoderState struct {
|
|||
nWritten int64
|
||||
headerWritten bool
|
||||
eofWritten bool
|
||||
fullFrameWritten bool
|
||||
|
||||
// This waitgroup indicates an encode is running.
|
||||
wg sync.WaitGroup
|
||||
|
|
@ -71,27 +72,26 @@ func NewWriter(w io.Writer, opts ...EOption) (*Encoder, error) {
|
|||
}
|
||||
if w != nil {
|
||||
e.Reset(w)
|
||||
} else {
|
||||
e.init.Do(func() {
|
||||
e.initialize()
|
||||
})
|
||||
}
|
||||
return &e, nil
|
||||
}
|
||||
|
||||
func (e *Encoder) initialize() {
|
||||
if e.o.concurrent == 0 {
|
||||
e.o.setDefault()
|
||||
}
|
||||
e.encoders = make(chan encoder, e.o.concurrent)
|
||||
for i := 0; i < e.o.concurrent; i++ {
|
||||
e.encoders <- e.o.encoder()
|
||||
enc := e.o.encoder()
|
||||
// If not single block, history will be allocated on first use.
|
||||
enc.Reset(true)
|
||||
e.encoders <- enc
|
||||
}
|
||||
}
|
||||
|
||||
// Reset will re-initialize the writer and new writes will encode to the supplied writer
|
||||
// as a new, independent stream.
|
||||
func (e *Encoder) Reset(w io.Writer) {
|
||||
e.init.Do(func() {
|
||||
e.initialize()
|
||||
})
|
||||
s := &e.state
|
||||
s.wg.Wait()
|
||||
s.wWg.Wait()
|
||||
|
|
@ -115,9 +115,10 @@ func (e *Encoder) Reset(w io.Writer) {
|
|||
s.filling = s.filling[:0]
|
||||
s.current = s.current[:0]
|
||||
s.previous = s.previous[:0]
|
||||
s.encoder.Reset()
|
||||
s.encoder.Reset(false)
|
||||
s.headerWritten = false
|
||||
s.eofWritten = false
|
||||
s.fullFrameWritten = false
|
||||
s.w = w
|
||||
s.err = nil
|
||||
s.nWritten = 0
|
||||
|
|
@ -176,6 +177,23 @@ func (e *Encoder) nextBlock(final bool) error {
|
|||
return fmt.Errorf("block > maxStoreBlockSize")
|
||||
}
|
||||
if !s.headerWritten {
|
||||
// If we have a single block encode, do a sync compression.
|
||||
if final && len(s.filling) > 0 {
|
||||
s.current = e.EncodeAll(s.filling, s.current[:0])
|
||||
var n2 int
|
||||
n2, s.err = s.w.Write(s.current)
|
||||
if s.err != nil {
|
||||
return s.err
|
||||
}
|
||||
s.nWritten += int64(n2)
|
||||
s.current = s.current[:0]
|
||||
s.filling = s.filling[:0]
|
||||
s.headerWritten = true
|
||||
s.fullFrameWritten = true
|
||||
s.eofWritten = true
|
||||
return nil
|
||||
}
|
||||
|
||||
var tmp [maxHeaderSize]byte
|
||||
fh := frameHeader{
|
||||
ContentSize: 0,
|
||||
|
|
@ -263,7 +281,7 @@ func (e *Encoder) nextBlock(final bool) error {
|
|||
// If we got the exact same number of literals as input,
|
||||
// assume the literals cannot be compressed.
|
||||
if len(src) != len(blk.literals) || len(src) != e.o.blockSize {
|
||||
err = blk.encode(e.o.noEntropy)
|
||||
err = blk.encode(e.o.noEntropy, !e.o.allLitEntropy)
|
||||
}
|
||||
switch err {
|
||||
case errIncompressible:
|
||||
|
|
@ -298,7 +316,9 @@ func (e *Encoder) ReadFrom(r io.Reader) (n int64, err error) {
|
|||
src := e.state.filling
|
||||
for {
|
||||
n2, err := r.Read(src)
|
||||
if e.o.crc {
|
||||
_, _ = e.state.encoder.CRC().Write(src[:n2])
|
||||
}
|
||||
// src is now the unfilled part...
|
||||
src = src[n2:]
|
||||
n += int64(n2)
|
||||
|
|
@ -363,6 +383,9 @@ func (e *Encoder) Close() error {
|
|||
if err != nil {
|
||||
return err
|
||||
}
|
||||
if e.state.fullFrameWritten {
|
||||
return s.err
|
||||
}
|
||||
s.wg.Wait()
|
||||
s.wWg.Wait()
|
||||
|
||||
|
|
@ -422,18 +445,14 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
|
|||
}
|
||||
return dst
|
||||
}
|
||||
e.init.Do(func() {
|
||||
e.o.setDefault()
|
||||
e.initialize()
|
||||
})
|
||||
e.init.Do(e.initialize)
|
||||
enc := <-e.encoders
|
||||
defer func() {
|
||||
// Release encoder reference to last block.
|
||||
enc.Reset()
|
||||
// If a non-single block is needed the encoder will reset again.
|
||||
enc.Reset(true)
|
||||
e.encoders <- enc
|
||||
}()
|
||||
enc.Reset()
|
||||
blk := enc.Block()
|
||||
// Use single segments when above minimum window and below 1MB.
|
||||
single := len(src) < 1<<20 && len(src) > MinWindowSize
|
||||
if e.o.single != nil {
|
||||
|
|
@ -456,12 +475,13 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
|
|||
panic(err)
|
||||
}
|
||||
|
||||
if len(src) <= e.o.blockSize && len(src) <= maxBlockSize {
|
||||
// If we can do everything in one block, prefer that.
|
||||
if len(src) <= maxCompressedBlockSize {
|
||||
// Slightly faster with no history and everything in one block.
|
||||
if e.o.crc {
|
||||
_, _ = enc.CRC().Write(src)
|
||||
}
|
||||
blk.reset(nil)
|
||||
blk := enc.Block()
|
||||
blk.last = true
|
||||
enc.EncodeNoHist(blk, src)
|
||||
|
||||
|
|
@ -472,7 +492,7 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
|
|||
if len(blk.literals) != len(src) || len(src) != e.o.blockSize {
|
||||
// Output directly to dst
|
||||
blk.output = dst
|
||||
err = blk.encode(e.o.noEntropy)
|
||||
err = blk.encode(e.o.noEntropy, !e.o.allLitEntropy)
|
||||
}
|
||||
|
||||
switch err {
|
||||
|
|
@ -488,6 +508,8 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
|
|||
}
|
||||
blk.output = oldout
|
||||
} else {
|
||||
enc.Reset(false)
|
||||
blk := enc.Block()
|
||||
for len(src) > 0 {
|
||||
todo := src
|
||||
if len(todo) > e.o.blockSize {
|
||||
|
|
@ -507,7 +529,7 @@ func (e *Encoder) EncodeAll(src, dst []byte) []byte {
|
|||
// If we got the exact same number of literals as input,
|
||||
// assume the literals cannot be compressed.
|
||||
if len(blk.literals) != len(todo) || len(todo) != e.o.blockSize {
|
||||
err = blk.encode(e.o.noEntropy)
|
||||
err = blk.encode(e.o.noEntropy, !e.o.allLitEntropy)
|
||||
}
|
||||
|
||||
switch err {
|
||||
|
|
|
|||
|
|
@ -13,14 +13,17 @@ type EOption func(*encoderOptions) error
|
|||
// options retains accumulated state of multiple options.
|
||||
type encoderOptions struct {
|
||||
concurrent int
|
||||
crc bool
|
||||
level EncoderLevel
|
||||
single *bool
|
||||
pad int
|
||||
blockSize int
|
||||
windowSize int
|
||||
level EncoderLevel
|
||||
crc bool
|
||||
fullZero bool
|
||||
noEntropy bool
|
||||
allLitEntropy bool
|
||||
customWindow bool
|
||||
customALEntropy bool
|
||||
}
|
||||
|
||||
func (o *encoderOptions) setDefault() {
|
||||
|
|
@ -30,7 +33,7 @@ func (o *encoderOptions) setDefault() {
|
|||
crc: true,
|
||||
single: nil,
|
||||
blockSize: 1 << 16,
|
||||
windowSize: 1 << 22,
|
||||
windowSize: 8 << 20,
|
||||
level: SpeedDefault,
|
||||
}
|
||||
}
|
||||
|
|
@ -39,9 +42,11 @@ func (o *encoderOptions) setDefault() {
|
|||
func (o encoderOptions) encoder() encoder {
|
||||
switch o.level {
|
||||
case SpeedDefault:
|
||||
return &doubleFastEncoder{fastEncoder: fastEncoder{maxMatchOff: int32(o.windowSize)}}
|
||||
return &doubleFastEncoder{fastEncoder: fastEncoder{fastBase: fastBase{maxMatchOff: int32(o.windowSize)}}}
|
||||
case SpeedBetterCompression:
|
||||
return &betterFastEncoder{fastBase: fastBase{maxMatchOff: int32(o.windowSize)}}
|
||||
case SpeedFastest:
|
||||
return &fastEncoder{maxMatchOff: int32(o.windowSize)}
|
||||
return &fastEncoder{fastBase: fastBase{maxMatchOff: int32(o.windowSize)}}
|
||||
}
|
||||
panic("unknown compression level")
|
||||
}
|
||||
|
|
@ -67,7 +72,7 @@ func WithEncoderConcurrency(n int) EOption {
|
|||
}
|
||||
|
||||
// WithWindowSize will set the maximum allowed back-reference distance.
|
||||
// The value must be a power of two between WindowSizeMin and WindowSizeMax.
|
||||
// The value must be a power of two between MinWindowSize and MaxWindowSize.
|
||||
// A larger value will enable better compression but allocate more memory and,
|
||||
// for above-default values, take considerably longer.
|
||||
// The default value is determined by the compression level.
|
||||
|
|
@ -83,6 +88,7 @@ func WithWindowSize(n int) EOption {
|
|||
}
|
||||
|
||||
o.windowSize = n
|
||||
o.customWindow = true
|
||||
if o.blockSize > o.windowSize {
|
||||
o.blockSize = o.windowSize
|
||||
}
|
||||
|
|
@ -130,18 +136,18 @@ const (
|
|||
// This is roughly equivalent to the default Zstandard mode (level 3).
|
||||
SpeedDefault
|
||||
|
||||
// SpeedBetterCompression will yield better compression than the default.
|
||||
// Currently it is about zstd level 7-8 with ~ 2x-3x the default CPU usage.
|
||||
// By using this, notice that CPU usage may go up in the future.
|
||||
SpeedBetterCompression
|
||||
|
||||
// speedLast should be kept as the last actual compression option.
|
||||
// The is not for external usage, but is used to keep track of the valid options.
|
||||
speedLast
|
||||
|
||||
// SpeedBetterCompression will (in the future) yield better compression than the default,
|
||||
// but at approximately 4x the CPU usage of the default.
|
||||
// For now this is not implemented.
|
||||
SpeedBetterCompression = SpeedDefault
|
||||
|
||||
// SpeedBestCompression will choose the best available compression option.
|
||||
// For now this is not implemented.
|
||||
SpeedBestCompression = SpeedDefault
|
||||
SpeedBestCompression = SpeedBetterCompression
|
||||
)
|
||||
|
||||
// EncoderLevelFromString will convert a string representation of an encoding level back
|
||||
|
|
@ -163,8 +169,10 @@ func EncoderLevelFromZstd(level int) EncoderLevel {
|
|||
switch {
|
||||
case level < 3:
|
||||
return SpeedFastest
|
||||
case level >= 3:
|
||||
case level >= 3 && level < 6:
|
||||
return SpeedDefault
|
||||
case level > 5:
|
||||
return SpeedBetterCompression
|
||||
}
|
||||
return SpeedDefault
|
||||
}
|
||||
|
|
@ -176,6 +184,8 @@ func (e EncoderLevel) String() string {
|
|||
return "fastest"
|
||||
case SpeedDefault:
|
||||
return "default"
|
||||
case SpeedBetterCompression:
|
||||
return "better"
|
||||
default:
|
||||
return "invalid"
|
||||
}
|
||||
|
|
@ -189,6 +199,20 @@ func WithEncoderLevel(l EncoderLevel) EOption {
|
|||
return fmt.Errorf("unknown encoder level")
|
||||
}
|
||||
o.level = l
|
||||
if !o.customWindow {
|
||||
switch o.level {
|
||||
case SpeedFastest:
|
||||
o.windowSize = 4 << 20
|
||||
case SpeedDefault:
|
||||
o.windowSize = 8 << 20
|
||||
case SpeedBetterCompression:
|
||||
o.windowSize = 16 << 20
|
||||
}
|
||||
}
|
||||
if !o.customALEntropy {
|
||||
o.allLitEntropy = l > SpeedFastest
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
|
@ -203,6 +227,18 @@ func WithZeroFrames(b bool) EOption {
|
|||
}
|
||||
}
|
||||
|
||||
// WithAllLitEntropyCompression will apply entropy compression if no matches are found.
|
||||
// Disabling this will skip incompressible data faster, but in cases with no matches but
|
||||
// skewed character distribution compression is lost.
|
||||
// Default value depends on the compression level selected.
|
||||
func WithAllLitEntropyCompression(b bool) EOption {
|
||||
return func(o *encoderOptions) error {
|
||||
o.customALEntropy = true
|
||||
o.allLitEntropy = b
|
||||
return nil
|
||||
}
|
||||
}
|
||||
|
||||
// WithNoEntropyCompression will always skip entropy compression of literals.
|
||||
// This can be useful if content has matches, but unlikely to benefit from entropy
|
||||
// compression. Usually the slight speed improvement is not worth enabling this.
|
||||
|
|
|
|||
|
|
@ -18,14 +18,9 @@ import (
|
|||
type frameDec struct {
|
||||
o decoderOptions
|
||||
crc hash.Hash64
|
||||
frameDone sync.WaitGroup
|
||||
offset int64
|
||||
|
||||
WindowSize uint64
|
||||
DictionaryID uint32
|
||||
FrameContentSize uint64
|
||||
HasCheckSum bool
|
||||
SingleSegment bool
|
||||
|
||||
// maxWindowSize is the maximum windows size to support.
|
||||
// should never be bigger than max-int.
|
||||
|
|
@ -42,9 +37,16 @@ type frameDec struct {
|
|||
// Byte buffer that can be reused for small input blocks.
|
||||
bBuf byteBuf
|
||||
|
||||
FrameContentSize uint64
|
||||
frameDone sync.WaitGroup
|
||||
|
||||
DictionaryID *uint32
|
||||
HasCheckSum bool
|
||||
SingleSegment bool
|
||||
|
||||
// asyncRunning indicates whether the async routine processes input on 'decoding'.
|
||||
asyncRunning bool
|
||||
asyncRunningMu sync.Mutex
|
||||
asyncRunning bool
|
||||
}
|
||||
|
||||
const (
|
||||
|
|
@ -140,7 +142,7 @@ func (d *frameDec) reset(br byteBuffer) error {
|
|||
|
||||
// Read Dictionary_ID
|
||||
// https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#dictionary_id
|
||||
d.DictionaryID = 0
|
||||
d.DictionaryID = nil
|
||||
if size := fhd & 3; size != 0 {
|
||||
if size == 3 {
|
||||
size = 4
|
||||
|
|
@ -152,19 +154,22 @@ func (d *frameDec) reset(br byteBuffer) error {
|
|||
}
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
var id uint32
|
||||
switch size {
|
||||
case 1:
|
||||
d.DictionaryID = uint32(b[0])
|
||||
id = uint32(b[0])
|
||||
case 2:
|
||||
d.DictionaryID = uint32(b[0]) | (uint32(b[1]) << 8)
|
||||
id = uint32(b[0]) | (uint32(b[1]) << 8)
|
||||
case 4:
|
||||
d.DictionaryID = uint32(b[0]) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24)
|
||||
id = uint32(b[0]) | (uint32(b[1]) << 8) | (uint32(b[2]) << 16) | (uint32(b[3]) << 24)
|
||||
}
|
||||
if debug {
|
||||
println("Dict size", size, "ID:", d.DictionaryID)
|
||||
println("Dict size", size, "ID:", id)
|
||||
}
|
||||
if d.DictionaryID != 0 {
|
||||
return ErrUnknownDictionary
|
||||
if id > 0 {
|
||||
// ID 0 means "sorry, no dictionary anyway".
|
||||
// https://github.com/facebook/zstd/blob/dev/doc/zstd_compression_format.md#dictionary-format
|
||||
d.DictionaryID = &id
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -231,7 +236,11 @@ func (d *frameDec) reset(br byteBuffer) error {
|
|||
return ErrWindowSizeTooSmall
|
||||
}
|
||||
d.history.windowSize = int(d.WindowSize)
|
||||
if d.o.lowMem && d.history.windowSize < maxBlockSize {
|
||||
d.history.maxSize = d.history.windowSize * 2
|
||||
} else {
|
||||
d.history.maxSize = d.history.windowSize + maxBlockSize
|
||||
}
|
||||
// history contains input - maybe we do something
|
||||
d.rawInput = br
|
||||
return nil
|
||||
|
|
@ -318,8 +327,8 @@ func (d *frameDec) checkCRC() error {
|
|||
|
||||
func (d *frameDec) initAsync() {
|
||||
if !d.o.lowMem && !d.SingleSegment {
|
||||
// set max extra size history to 20MB.
|
||||
d.history.maxSize = d.history.windowSize + maxBlockSize*10
|
||||
// set max extra size history to 10MB.
|
||||
d.history.maxSize = d.history.windowSize + maxBlockSize*5
|
||||
}
|
||||
// re-alloc if more than one extra block size.
|
||||
if d.o.lowMem && cap(d.history.b) > d.history.maxSize+maxBlockSize {
|
||||
|
|
@ -345,8 +354,6 @@ func (d *frameDec) initAsync() {
|
|||
// When the frame has finished decoding the *bufio.Reader
|
||||
// containing the remaining input will be sent on frameDec.frameDone.
|
||||
func (d *frameDec) startDecoder(output chan decodeOutput) {
|
||||
// TODO: Init to dictionary
|
||||
d.history.reset()
|
||||
written := int64(0)
|
||||
|
||||
defer func() {
|
||||
|
|
@ -439,8 +446,6 @@ func (d *frameDec) startDecoder(output chan decodeOutput) {
|
|||
|
||||
// runDecoder will create a sync decoder that will decode a block of data.
|
||||
func (d *frameDec) runDecoder(dst []byte, dec *blockDec) ([]byte, error) {
|
||||
// TODO: Init to dictionary
|
||||
d.history.reset()
|
||||
saved := d.history.b
|
||||
|
||||
// We use the history for output to avoid copying it.
|
||||
|
|
|
|||
|
|
@ -19,7 +19,7 @@ const (
|
|||
* Increasing memory usage improves compression ratio
|
||||
* Reduced memory usage can improve speed, due to cache effect
|
||||
* Recommended max value is 14, for 16KB, which nicely fits into Intel x86 L1 cache */
|
||||
maxMemoryUsage = 11
|
||||
maxMemoryUsage = tablelogAbsoluteMax + 2
|
||||
|
||||
maxTableLog = maxMemoryUsage - 2
|
||||
maxTablesize = 1 << maxTableLog
|
||||
|
|
@ -55,7 +55,7 @@ func (s *fseDecoder) readNCount(b *byteReader, maxSymbol uint16) error {
|
|||
if b.remain() < 4 {
|
||||
return errors.New("input too small")
|
||||
}
|
||||
bitStream := b.Uint32()
|
||||
bitStream := b.Uint32NC()
|
||||
nbBits := uint((bitStream & 0xF) + minTablelog) // extract tableLog
|
||||
if nbBits > tablelogAbsoluteMax {
|
||||
println("Invalid tablelog:", nbBits)
|
||||
|
|
@ -79,7 +79,8 @@ func (s *fseDecoder) readNCount(b *byteReader, maxSymbol uint16) error {
|
|||
n0 += 24
|
||||
if r := b.remain(); r > 5 {
|
||||
b.advance(2)
|
||||
bitStream = b.Uint32() >> bitCount
|
||||
// The check above should make sure we can read 32 bits
|
||||
bitStream = b.Uint32NC() >> bitCount
|
||||
} else {
|
||||
// end of bit stream
|
||||
bitStream >>= 16
|
||||
|
|
@ -104,10 +105,11 @@ func (s *fseDecoder) readNCount(b *byteReader, maxSymbol uint16) error {
|
|||
charnum++
|
||||
}
|
||||
|
||||
if r := b.remain(); r >= 7 || r+int(bitCount>>3) >= 4 {
|
||||
if r := b.remain(); r >= 7 || r-int(bitCount>>3) >= 4 {
|
||||
b.advance(bitCount >> 3)
|
||||
bitCount &= 7
|
||||
bitStream = b.Uint32() >> bitCount
|
||||
// The check above should make sure we can read 32 bits
|
||||
bitStream = b.Uint32NC() >> bitCount
|
||||
} else {
|
||||
bitStream >>= 2
|
||||
}
|
||||
|
|
@ -148,17 +150,16 @@ func (s *fseDecoder) readNCount(b *byteReader, maxSymbol uint16) error {
|
|||
threshold >>= 1
|
||||
}
|
||||
|
||||
//println("b.off:", b.off, "len:", len(b.b), "bc:", bitCount, "remain:", b.remain())
|
||||
if r := b.remain(); r >= 7 || r+int(bitCount>>3) >= 4 {
|
||||
if r := b.remain(); r >= 7 || r-int(bitCount>>3) >= 4 {
|
||||
b.advance(bitCount >> 3)
|
||||
bitCount &= 7
|
||||
// The check above should make sure we can read 32 bits
|
||||
bitStream = b.Uint32NC() >> (bitCount & 31)
|
||||
} else {
|
||||
bitCount -= (uint)(8 * (len(b.b) - 4 - b.off))
|
||||
b.off = len(b.b) - 4
|
||||
//println("b.off:", b.off, "len:", len(b.b), "bc:", bitCount, "iend", iend)
|
||||
}
|
||||
bitStream = b.Uint32() >> (bitCount & 31)
|
||||
//printf("bitstream is now: 0b%b", bitStream)
|
||||
}
|
||||
}
|
||||
s.symbolLen = charnum
|
||||
if s.symbolLen <= 1 {
|
||||
|
|
|
|||
|
|
@ -17,6 +17,7 @@ type history struct {
|
|||
windowSize int
|
||||
maxSize int
|
||||
error bool
|
||||
dict *dict
|
||||
}
|
||||
|
||||
// reset will reset the history to initial state of a frame.
|
||||
|
|
@ -36,12 +37,27 @@ func (h *history) reset() {
|
|||
}
|
||||
h.decoders = sequenceDecs{}
|
||||
if h.huffTree != nil {
|
||||
if h.dict == nil || h.dict.litDec != h.huffTree {
|
||||
huffDecoderPool.Put(h.huffTree)
|
||||
}
|
||||
}
|
||||
h.huffTree = nil
|
||||
h.dict = nil
|
||||
//printf("history created: %+v (l: %d, c: %d)", *h, len(h.b), cap(h.b))
|
||||
}
|
||||
|
||||
func (h *history) setDict(dict *dict) {
|
||||
if dict == nil {
|
||||
return
|
||||
}
|
||||
h.dict = dict
|
||||
h.decoders.litLengths = dict.llDec
|
||||
h.decoders.offsets = dict.ofDec
|
||||
h.decoders.matchLengths = dict.mlDec
|
||||
h.recentOffsets = dict.offsets
|
||||
h.huffTree = dict.litDec
|
||||
}
|
||||
|
||||
// append bytes to history.
|
||||
// This function will make sure there is space for it,
|
||||
// if the buffer has been allocated with enough extra space.
|
||||
|
|
|
|||
|
|
@ -62,8 +62,10 @@ type sequenceDecs struct {
|
|||
matchLengths sequenceDec
|
||||
prevOffset [3]int
|
||||
hist []byte
|
||||
dict []byte
|
||||
literals []byte
|
||||
out []byte
|
||||
windowSize int
|
||||
maxBits uint8
|
||||
}
|
||||
|
||||
|
|
@ -82,7 +84,12 @@ func (s *sequenceDecs) initialize(br *bitReader, hist *history, literals, out []
|
|||
s.hist = hist.b
|
||||
s.prevOffset = hist.recentOffsets
|
||||
s.maxBits = s.litLengths.fse.maxBits + s.offsets.fse.maxBits + s.matchLengths.fse.maxBits
|
||||
s.windowSize = hist.windowSize
|
||||
s.out = out
|
||||
s.dict = nil
|
||||
if hist.dict != nil {
|
||||
s.dict = hist.dict.content
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
@ -98,23 +105,78 @@ func (s *sequenceDecs) decode(seqs int, br *bitReader, hist []byte) error {
|
|||
printf("reading sequence %d, exceeded available data\n", seqs-i)
|
||||
return io.ErrUnexpectedEOF
|
||||
}
|
||||
var litLen, matchOff, matchLen int
|
||||
var ll, mo, ml int
|
||||
if br.off > 4+((maxOffsetBits+16+16)>>3) {
|
||||
litLen, matchOff, matchLen = s.nextFast(br, llState, mlState, ofState)
|
||||
// inlined function:
|
||||
// ll, mo, ml = s.nextFast(br, llState, mlState, ofState)
|
||||
|
||||
// Final will not read from stream.
|
||||
var llB, mlB, moB uint8
|
||||
ll, llB = llState.final()
|
||||
ml, mlB = mlState.final()
|
||||
mo, moB = ofState.final()
|
||||
|
||||
// extra bits are stored in reverse order.
|
||||
br.fillFast()
|
||||
mo += br.getBits(moB)
|
||||
if s.maxBits > 32 {
|
||||
br.fillFast()
|
||||
}
|
||||
ml += br.getBits(mlB)
|
||||
ll += br.getBits(llB)
|
||||
|
||||
if moB > 1 {
|
||||
s.prevOffset[2] = s.prevOffset[1]
|
||||
s.prevOffset[1] = s.prevOffset[0]
|
||||
s.prevOffset[0] = mo
|
||||
} else {
|
||||
// mo = s.adjustOffset(mo, ll, moB)
|
||||
// Inlined for rather big speedup
|
||||
if ll == 0 {
|
||||
// There is an exception though, when current sequence's literals_length = 0.
|
||||
// In this case, repeated offsets are shifted by one, so an offset_value of 1 means Repeated_Offset2,
|
||||
// an offset_value of 2 means Repeated_Offset3, and an offset_value of 3 means Repeated_Offset1 - 1_byte.
|
||||
mo++
|
||||
}
|
||||
|
||||
if mo == 0 {
|
||||
mo = s.prevOffset[0]
|
||||
} else {
|
||||
var temp int
|
||||
if mo == 3 {
|
||||
temp = s.prevOffset[0] - 1
|
||||
} else {
|
||||
temp = s.prevOffset[mo]
|
||||
}
|
||||
|
||||
if temp == 0 {
|
||||
// 0 is not valid; input is corrupted; force offset to 1
|
||||
println("temp was 0")
|
||||
temp = 1
|
||||
}
|
||||
|
||||
if mo != 1 {
|
||||
s.prevOffset[2] = s.prevOffset[1]
|
||||
}
|
||||
s.prevOffset[1] = s.prevOffset[0]
|
||||
s.prevOffset[0] = temp
|
||||
mo = temp
|
||||
}
|
||||
}
|
||||
br.fillFast()
|
||||
} else {
|
||||
litLen, matchOff, matchLen = s.next(br, llState, mlState, ofState)
|
||||
ll, mo, ml = s.next(br, llState, mlState, ofState)
|
||||
br.fill()
|
||||
}
|
||||
|
||||
if debugSequences {
|
||||
println("Seq", seqs-i-1, "Litlen:", litLen, "matchOff:", matchOff, "(abs) matchLen:", matchLen)
|
||||
println("Seq", seqs-i-1, "Litlen:", ll, "mo:", mo, "(abs) ml:", ml)
|
||||
}
|
||||
|
||||
if litLen > len(s.literals) {
|
||||
return fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available", litLen, len(s.literals))
|
||||
if ll > len(s.literals) {
|
||||
return fmt.Errorf("unexpected literal count, want %d bytes, but only %d is available", ll, len(s.literals))
|
||||
}
|
||||
size := litLen + matchLen + len(s.out)
|
||||
size := ll + ml + len(s.out)
|
||||
if size-startSize > maxBlockSize {
|
||||
return fmt.Errorf("output (%d) bigger than max block size", size)
|
||||
}
|
||||
|
|
@ -125,49 +187,70 @@ func (s *sequenceDecs) decode(seqs int, br *bitReader, hist []byte) error {
|
|||
s.out = append(s.out, make([]byte, maxBlockSize)...)
|
||||
s.out = s.out[:len(s.out)-maxBlockSize]
|
||||
}
|
||||
if matchLen > maxMatchLen {
|
||||
return fmt.Errorf("match len (%d) bigger than max allowed length", matchLen)
|
||||
}
|
||||
if matchOff > len(s.out)+len(hist)+litLen {
|
||||
return fmt.Errorf("match offset (%d) bigger than current history (%d)", matchOff, len(s.out)+len(hist)+litLen)
|
||||
}
|
||||
if matchOff == 0 && matchLen > 0 {
|
||||
return fmt.Errorf("zero matchoff and matchlen > 0")
|
||||
if ml > maxMatchLen {
|
||||
return fmt.Errorf("match len (%d) bigger than max allowed length", ml)
|
||||
}
|
||||
|
||||
s.out = append(s.out, s.literals[:litLen]...)
|
||||
s.literals = s.literals[litLen:]
|
||||
// Add literals
|
||||
s.out = append(s.out, s.literals[:ll]...)
|
||||
s.literals = s.literals[ll:]
|
||||
out := s.out
|
||||
|
||||
if mo > len(s.out)+len(hist) || mo > s.windowSize {
|
||||
if len(s.dict) == 0 {
|
||||
return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(s.out)+len(hist))
|
||||
}
|
||||
|
||||
// we may be in dictionary.
|
||||
dictO := len(s.dict) - (mo - (len(s.out) + len(hist)))
|
||||
if dictO < 0 || dictO >= len(s.dict) {
|
||||
return fmt.Errorf("match offset (%d) bigger than current history (%d)", mo, len(s.out)+len(hist))
|
||||
}
|
||||
end := dictO + ml
|
||||
if end > len(s.dict) {
|
||||
out = append(out, s.dict[dictO:]...)
|
||||
mo -= len(s.dict) - dictO
|
||||
ml -= len(s.dict) - dictO
|
||||
} else {
|
||||
out = append(out, s.dict[dictO:end]...)
|
||||
mo = 0
|
||||
ml = 0
|
||||
}
|
||||
}
|
||||
|
||||
if mo == 0 && ml > 0 {
|
||||
return fmt.Errorf("zero matchoff and matchlen (%d) > 0", ml)
|
||||
}
|
||||
|
||||
// Copy from history.
|
||||
// TODO: Blocks without history could be made to ignore this completely.
|
||||
if v := matchOff - len(s.out); v > 0 {
|
||||
if v := mo - len(s.out); v > 0 {
|
||||
// v is the start position in history from end.
|
||||
start := len(s.hist) - v
|
||||
if matchLen > v {
|
||||
if ml > v {
|
||||
// Some goes into current block.
|
||||
// Copy remainder of history
|
||||
out = append(out, s.hist[start:]...)
|
||||
matchOff -= v
|
||||
matchLen -= v
|
||||
mo -= v
|
||||
ml -= v
|
||||
} else {
|
||||
out = append(out, s.hist[start:start+matchLen]...)
|
||||
matchLen = 0
|
||||
out = append(out, s.hist[start:start+ml]...)
|
||||
ml = 0
|
||||
}
|
||||
}
|
||||
// We must be in current buffer now
|
||||
if matchLen > 0 {
|
||||
start := len(s.out) - matchOff
|
||||
if matchLen <= len(s.out)-start {
|
||||
if ml > 0 {
|
||||
start := len(s.out) - mo
|
||||
if ml <= len(s.out)-start {
|
||||
// No overlap
|
||||
out = append(out, s.out[start:start+matchLen]...)
|
||||
out = append(out, s.out[start:start+ml]...)
|
||||
} else {
|
||||
// Overlapping copy
|
||||
// Extend destination slice and copy one byte at the time.
|
||||
out = out[:len(out)+matchLen]
|
||||
src := out[start : start+matchLen]
|
||||
out = out[:len(out)+ml]
|
||||
src := out[start : start+ml]
|
||||
// Destination is the space we just added.
|
||||
dst := out[len(out)-matchLen:]
|
||||
dst := out[len(out)-ml:]
|
||||
dst = dst[:len(src)]
|
||||
for i := range src {
|
||||
dst[i] = src[i]
|
||||
|
|
|
|||
|
|
@ -178,7 +178,7 @@ func (r *SnappyConverter) Convert(in io.Reader, w io.Writer) (int64, error) {
|
|||
r.err = ErrSnappyCorrupt
|
||||
return written, r.err
|
||||
}
|
||||
err = r.block.encode(false)
|
||||
err = r.block.encode(false, false)
|
||||
switch err {
|
||||
case errIncompressible:
|
||||
r.block.popOffsets()
|
||||
|
|
|
|||
|
|
@ -87,6 +87,17 @@ func printf(format string, a ...interface{}) {
|
|||
}
|
||||
}
|
||||
|
||||
// matchLenFast does matching, but will not match the last up to 7 bytes.
|
||||
func matchLenFast(a, b []byte) int {
|
||||
endI := len(a) & (math.MaxInt32 - 7)
|
||||
for i := 0; i < endI; i += 8 {
|
||||
if diff := load64(a, i) ^ load64(b, i); diff != 0 {
|
||||
return i + bits.TrailingZeros64(diff)>>3
|
||||
}
|
||||
}
|
||||
return endI
|
||||
}
|
||||
|
||||
// matchLen returns the maximum length.
|
||||
// a must be the shortest of the two.
|
||||
// The function also returns whether all bytes matched.
|
||||
|
|
@ -97,33 +108,18 @@ func matchLen(a, b []byte) int {
|
|||
return i + (bits.TrailingZeros64(diff) >> 3)
|
||||
}
|
||||
}
|
||||
|
||||
checked := (len(a) >> 3) << 3
|
||||
a = a[checked:]
|
||||
b = b[checked:]
|
||||
// TODO: We could do a 4 check.
|
||||
for i := range a {
|
||||
if a[i] != b[i] {
|
||||
return int(i) + checked
|
||||
return i + checked
|
||||
}
|
||||
}
|
||||
return len(a) + checked
|
||||
}
|
||||
|
||||
// matchLen returns a match length in src between index s and t
|
||||
func matchLenIn(src []byte, s, t int32) int32 {
|
||||
s1 := len(src)
|
||||
b := src[t:]
|
||||
a := src[s:s1]
|
||||
b = b[:len(a)]
|
||||
// Extend the match to be as long as possible.
|
||||
for i := range a {
|
||||
if a[i] != b[i] {
|
||||
return int32(i)
|
||||
}
|
||||
}
|
||||
return int32(len(a))
|
||||
}
|
||||
|
||||
func load3232(b []byte, i int32) uint32 {
|
||||
// Help the compiler eliminate bounds checks on the read so it can be done in a single read.
|
||||
b = b[i:]
|
||||
|
|
|
|||
|
|
@ -55,6 +55,9 @@ func newFile(dataSources []dataSource, opts LoadOptions) *File {
|
|||
if len(opts.KeyValueDelimiterOnWrite) == 0 {
|
||||
opts.KeyValueDelimiterOnWrite = "="
|
||||
}
|
||||
if len(opts.ChildSectionDelimiter) == 0 {
|
||||
opts.ChildSectionDelimiter = "."
|
||||
}
|
||||
|
||||
return &File{
|
||||
BlockMode: true,
|
||||
|
|
@ -82,7 +85,7 @@ func (f *File) NewSection(name string) (*Section, error) {
|
|||
return nil, errors.New("empty section name")
|
||||
}
|
||||
|
||||
if f.options.Insensitive && name != DefaultSection {
|
||||
if (f.options.Insensitive || f.options.InsensitiveSections) && name != DefaultSection {
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
|
||||
|
|
@ -144,7 +147,7 @@ func (f *File) SectionsByName(name string) ([]*Section, error) {
|
|||
if len(name) == 0 {
|
||||
name = DefaultSection
|
||||
}
|
||||
if f.options.Insensitive {
|
||||
if f.options.Insensitive || f.options.InsensitiveSections {
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
|
||||
|
|
@ -236,7 +239,7 @@ func (f *File) DeleteSectionWithIndex(name string, index int) error {
|
|||
if len(name) == 0 {
|
||||
name = DefaultSection
|
||||
}
|
||||
if f.options.Insensitive {
|
||||
if f.options.Insensitive || f.options.InsensitiveSections {
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
|
||||
|
|
@ -347,7 +350,7 @@ func (f *File) writeToBuffer(indent string) (*bytes.Buffer, error) {
|
|||
}
|
||||
}
|
||||
|
||||
if i > 0 || DefaultHeader {
|
||||
if i > 0 || DefaultHeader || (i == 0 && strings.ToUpper(sec.name) != DefaultSection) {
|
||||
if _, err := buf.WriteString("[" + sname + "]" + LineBreak); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -451,6 +454,8 @@ func (f *File) writeToBuffer(indent string) (*bytes.Buffer, error) {
|
|||
val = `"""` + val + `"""`
|
||||
} else if !f.options.IgnoreInlineComment && strings.ContainsAny(val, "#;") {
|
||||
val = "`" + val + "`"
|
||||
} else if len(strings.TrimSpace(val)) != len(val) {
|
||||
val = `"` + val + `"`
|
||||
}
|
||||
if _, err := buf.WriteString(equalSign + val + LineBreak); err != nil {
|
||||
return nil, err
|
||||
|
|
|
|||
|
|
@ -71,6 +71,10 @@ type LoadOptions struct {
|
|||
Loose bool
|
||||
// Insensitive indicates whether the parser forces all section and key names to lowercase.
|
||||
Insensitive bool
|
||||
// InsensitiveSections indicates whether the parser forces all section to lowercase.
|
||||
InsensitiveSections bool
|
||||
// InsensitiveKeys indicates whether the parser forces all key names to lowercase.
|
||||
InsensitiveKeys bool
|
||||
// IgnoreContinuation indicates whether to ignore continuation lines while parsing.
|
||||
IgnoreContinuation bool
|
||||
// IgnoreInlineComment indicates whether to ignore comments at the end of value and treat it as part of value.
|
||||
|
|
@ -109,6 +113,8 @@ type LoadOptions struct {
|
|||
KeyValueDelimiters string
|
||||
// KeyValueDelimiters is the delimiter that are used to separate key and value output. By default, it is "=".
|
||||
KeyValueDelimiterOnWrite string
|
||||
// ChildSectionDelimiter is the delimiter that is used to separate child sections. By default, it is ".".
|
||||
ChildSectionDelimiter string
|
||||
// PreserveSurroundedQuote indicates whether to preserve surrounded quote (single and double quotes).
|
||||
PreserveSurroundedQuote bool
|
||||
// DebugFunc is called to collect debug information (currently only useful to debug parsing Python-style multiline values).
|
||||
|
|
|
|||
|
|
@ -377,7 +377,7 @@ func (f *File) parse(reader io.Reader) (err error) {
|
|||
|
||||
// Ignore error because default section name is never empty string.
|
||||
name := DefaultSection
|
||||
if f.options.Insensitive {
|
||||
if f.options.Insensitive || f.options.InsensitiveSections {
|
||||
name = strings.ToLower(DefaultSection)
|
||||
}
|
||||
section, _ := f.NewSection(name)
|
||||
|
|
@ -469,7 +469,7 @@ func (f *File) parse(reader io.Reader) (err error) {
|
|||
inUnparseableSection = false
|
||||
for i := range f.options.UnparseableSections {
|
||||
if f.options.UnparseableSections[i] == name ||
|
||||
(f.options.Insensitive && strings.EqualFold(f.options.UnparseableSections[i], name)) {
|
||||
((f.options.Insensitive || f.options.InsensitiveSections) && strings.EqualFold(f.options.UnparseableSections[i], name)) {
|
||||
inUnparseableSection = true
|
||||
continue
|
||||
}
|
||||
|
|
|
|||
|
|
@ -66,7 +66,7 @@ func (s *Section) SetBody(body string) {
|
|||
func (s *Section) NewKey(name, val string) (*Key, error) {
|
||||
if len(name) == 0 {
|
||||
return nil, errors.New("error creating new key: empty key name")
|
||||
} else if s.f.options.Insensitive {
|
||||
} else if s.f.options.Insensitive || s.f.options.InsensitiveKeys {
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
|
||||
|
|
@ -109,7 +109,7 @@ func (s *Section) GetKey(name string) (*Key, error) {
|
|||
if s.f.BlockMode {
|
||||
s.f.lock.RLock()
|
||||
}
|
||||
if s.f.options.Insensitive {
|
||||
if s.f.options.Insensitive || s.f.options.InsensitiveKeys {
|
||||
name = strings.ToLower(name)
|
||||
}
|
||||
key := s.keys[name]
|
||||
|
|
@ -121,7 +121,7 @@ func (s *Section) GetKey(name string) (*Key, error) {
|
|||
// Check if it is a child-section.
|
||||
sname := s.name
|
||||
for {
|
||||
if i := strings.LastIndex(sname, "."); i > -1 {
|
||||
if i := strings.LastIndex(sname, s.f.options.ChildSectionDelimiter); i > -1 {
|
||||
sname = sname[:i]
|
||||
sec, err := s.f.GetSection(sname)
|
||||
if err != nil {
|
||||
|
|
@ -188,7 +188,7 @@ func (s *Section) ParentKeys() []*Key {
|
|||
var parentKeys []*Key
|
||||
sname := s.name
|
||||
for {
|
||||
if i := strings.LastIndex(sname, "."); i > -1 {
|
||||
if i := strings.LastIndex(sname, s.f.options.ChildSectionDelimiter); i > -1 {
|
||||
sname = sname[:i]
|
||||
sec, err := s.f.GetSection(sname)
|
||||
if err != nil {
|
||||
|
|
@ -245,7 +245,7 @@ func (s *Section) DeleteKey(name string) {
|
|||
// For example, "[parent.child1]" and "[parent.child12]" are child sections
|
||||
// of section "[parent]".
|
||||
func (s *Section) ChildSections() []*Section {
|
||||
prefix := s.name + "."
|
||||
prefix := s.name + s.f.options.ChildSectionDelimiter
|
||||
children := make([]*Section, 0, 3)
|
||||
for _, name := range s.f.sectionList {
|
||||
if strings.HasPrefix(name, prefix) {
|
||||
|
|
|
|||
|
|
@ -479,7 +479,7 @@ func reflectSliceWithProperType(key *Key, field reflect.Value, delim string, all
|
|||
_ = keyWithShadows.AddShadow(val)
|
||||
}
|
||||
}
|
||||
key = keyWithShadows
|
||||
*key = *keyWithShadows
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
@ -595,7 +595,7 @@ func (s *Section) reflectFrom(val reflect.Value) error {
|
|||
continue
|
||||
}
|
||||
|
||||
if (tpField.Type.Kind() == reflect.Ptr && tpField.Anonymous) ||
|
||||
if (tpField.Type.Kind() == reflect.Ptr && tpField.Type.Elem().Kind() == reflect.Struct) ||
|
||||
(tpField.Type.Kind() == reflect.Struct && tpField.Type.Name() != "Time") {
|
||||
// Note: The only error here is section doesn't exist.
|
||||
sec, err := s.f.GetSection(fieldName)
|
||||
|
|
|
|||
|
|
@ -25,7 +25,7 @@ gitea.com/macaron/cors
|
|||
# gitea.com/macaron/csrf v0.0.0-20190822024205-3dc5a4474439
|
||||
## explicit
|
||||
gitea.com/macaron/csrf
|
||||
# gitea.com/macaron/gzip v0.0.0-20191118041502-506895b47aae
|
||||
# gitea.com/macaron/gzip v0.0.0-20200827120000-efa5e8477cf5
|
||||
## explicit
|
||||
gitea.com/macaron/gzip
|
||||
# gitea.com/macaron/i18n v0.0.0-20190822004228-474e714e2223
|
||||
|
|
@ -34,7 +34,7 @@ gitea.com/macaron/i18n
|
|||
# gitea.com/macaron/inject v0.0.0-20190805023432-d4c86e31027a
|
||||
## explicit
|
||||
gitea.com/macaron/inject
|
||||
# gitea.com/macaron/macaron v1.4.0
|
||||
# gitea.com/macaron/macaron v1.5.0
|
||||
## explicit
|
||||
gitea.com/macaron/macaron
|
||||
# gitea.com/macaron/session v0.0.0-20191207215012-613cebf0674d
|
||||
|
|
@ -479,7 +479,7 @@ github.com/keybase/go-crypto/openpgp/errors
|
|||
github.com/keybase/go-crypto/openpgp/packet
|
||||
github.com/keybase/go-crypto/openpgp/s2k
|
||||
github.com/keybase/go-crypto/rsa
|
||||
# github.com/klauspost/compress v1.10.2
|
||||
# github.com/klauspost/compress v1.10.11
|
||||
## explicit
|
||||
github.com/klauspost/compress/flate
|
||||
github.com/klauspost/compress/fse
|
||||
|
|
@ -768,7 +768,7 @@ go.mongodb.org/mongo-driver/bson/bsonrw
|
|||
go.mongodb.org/mongo-driver/bson/bsontype
|
||||
go.mongodb.org/mongo-driver/bson/primitive
|
||||
go.mongodb.org/mongo-driver/x/bsonx/bsoncore
|
||||
# golang.org/x/crypto v0.0.0-20200728195943-123391ffb6de
|
||||
# golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
|
||||
## explicit
|
||||
golang.org/x/crypto/acme
|
||||
golang.org/x/crypto/acme/autocert
|
||||
|
|
@ -933,7 +933,7 @@ gopkg.in/asn1-ber.v1
|
|||
# gopkg.in/gomail.v2 v2.0.0-20160411212932-81ebce5c23df
|
||||
## explicit
|
||||
gopkg.in/gomail.v2
|
||||
# gopkg.in/ini.v1 v1.57.0
|
||||
# gopkg.in/ini.v1 v1.60.2
|
||||
## explicit
|
||||
gopkg.in/ini.v1
|
||||
# gopkg.in/ldap.v3 v3.0.2
|
||||
|
|
|
|||
Loading…
Reference in New Issue